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CN107011245A - A kind of Ai Le replaces the preparation method of Buddhist nun's intermediate - Google Patents

A kind of Ai Le replaces the preparation method of Buddhist nun's intermediate Download PDF

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Publication number
CN107011245A
CN107011245A CN201710263664.0A CN201710263664A CN107011245A CN 107011245 A CN107011245 A CN 107011245A CN 201710263664 A CN201710263664 A CN 201710263664A CN 107011245 A CN107011245 A CN 107011245A
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dihydro
naphthalenones
reaction
ethyl
ethyls
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李兴民
童明
李涛
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HUNAN BOAODE BIOPHARMACEUTICAL TECHNOLOGY DEVELOPMENT Co Ltd
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HUNAN BOAODE BIOPHARMACEUTICAL TECHNOLOGY DEVELOPMENT Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D211/00Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
    • C07D211/04Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D211/06Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members
    • C07D211/36Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D211/56Nitrogen atoms
    • C07D211/58Nitrogen atoms attached in position 4

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  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

The invention discloses the preparation method that a kind of Ai Le replaces the naphthalenone of 1,1 dimethyl of Buddhist nun's intermediate 6 ethyl 7 [4 (base of morpholine 4) piperidinyl-1 base] 3,4 dihydro 2.The naphthalenone of 6 bromine, 73,4 dihydro of methoxyl group 2 is successively carried out boration reaction by this method with n-BuLi and organoboron reagent, and the obtained boric acid of 73,4 dihydro of methoxyl group, 2 naphthalenone 6 and bromoethane are carried out into catalyzed coupling reaction;Reaction is hydrolyzed in the obtained naphthalenone of 6 ethyl, 7 methoxyl group, 3,4 dihydro 2 in hydrobromic acid aqueous solution;The obtained naphthalenone of 6 ethyl, 7 hydroxyl, 3,4 dihydro 2 and trifluoromethyl sulfonic acid anhydride are subjected to triflated reaction;By 6 obtained ethyls 1,2,3, the naphthyl triflate of 4 tetrahydrochysene, 2 oxo 7 carries out substitution reaction with 4 (4 piperidyl) morpholines, by obtained [4 (base of morpholine 4) piperidinyl-1 base] 3 of 6 ethyl 7, the naphthalenone of 4 dihydro 2 carries out double methylation reactions with iodomethane, obtains Ai Le for Buddhist nun's intermediate.This method operation simplifies, and cost is relatively low, is a kind of environmental protection process, it is adaptable to industrialized production.

Description

A kind of Ai Le replaces the preparation method of Buddhist nun's intermediate
Technical field
The invention belongs to pharmaceutical chemistry synthesis technical field, and in particular to a kind of Ai Le replaces the preparation method of Buddhist nun's intermediate.
Background technology
New anaplastic lymphoma kinase (ALK) inhibitor Ai Le replaces chemical entitled 9- ethyl -6 of Buddhist nun (Alectinib), 6- dimethyl -8- [4- (morpholine -4- bases) piperidin-1-yl] -11- oxos -6,11- dihydro -5H- benzos [b] carbazole -3- formonitrile HCNs, Its chemical structural formula is:
Ai Le is the original new drug of the branch company ChugaiPharmaceutical inventions of company of Roche Group for Buddhist nun, The breakthrough medicine recognition of qulifications of U.S. FDA is obtained, accelerates examination & approval as oral anti-lung cancer new drug, for treating ALK bases Because of late period (metastatic) non-small cell lung cancer (NSCLC) of mutation, or to (R)-3-(1-(2,6-dichloro-3-fluorophenyl)ethoxy)-5-(1-(piperidin-4-yl)-1H-pyrazol-4-yl)pyridin-2-amine be resistant to patient treatment.
It is a kind of disclosed in patent US20130143877 and WO2012023597A1 to prepare the synthetic route that Ai Le replaces Buddhist nun:With 7- methoxyl group -3,4- dihydro -2- naphthalenones are initiation material, are methylated and bromination reaction by double, then with the Fischer of phenylhydrazine Indole synthesis carry out ring-closure reaction, are then passed through oxidation and introduce 11- carbonyls, then the hydroxyl obtained by methoxy hydrolysis is carried out It is triflated, it is condensed with 4- (4- piperidyls) morpholine, last 9- bromos are replaced by acetenyl, then are obtained through reduction reaction Ai Le replaces Buddhist nun, and process route is as follows:
Because whole synthetic route step is longer, cumbersome, cost is higher, is unfavorable for amplification production and industrialization is pushed away Extensively.
Ai Le disclosed in patent US20120083488 replaces the synthetic route of Buddhist nun, with iodo- 4 second of mono-tert-butyl malonate and 3- Base tert-butyl benzene is initiation material, and by condensation, cyclization, the condensation with 4- (4- piperidyls) morpholine, last cyclization obtains Ai Le For Buddhist nun, process route is as follows:
Ai Le disclosed in patent CN104402862A is as follows for the synthetic route of Buddhist nun, wherein needing to use indoles parent nucleus Compound is used as starting raw material:
The above two is combined into the initiation material of route costly, is difficult to obtain, thus needs synthetically prepared;Due to two The midbody product and final products for being combined into route are impure more with accessory substance, thus purifying needs to use a large amount of solvents, Cumbersome, yield is relatively low, is unfavorable for industrialization production popularization, it is therefore necessary to explore that technological process is short, simple to operate, cost Ai Le that is cheap and using suitable industrialized production replaces the synthetic method of Buddhist nun.
For the deficiencies in the prior art and defect, the applicant it is proposed that excessively a patent application, the patent Shen The synthetic method (application number 201610206224.7) that a kind of Ai Le replaces Buddhist nun please be disclose, the key intermediate being directed to is 1, 1- dimethyl -6- ethyls -7- [4- (morpholine -4- bases) piperidin-1-yl] -3,4- dihydro -2- naphthalenones, its technological process is short, operation Simply, with low cost and use suitable industrialized production, disclosed synthetic route is:
The content of the invention
It is an object of the invention to provide the preparation method that a kind of Ai Le replaces Buddhist nun's intermediate.The Ai Le replaces the change of Buddhist nun's intermediate Scientific name is referred to as 1,1- dimethyl -6- ethyls -7- [4- (morpholine -4- bases) piperidin-1-yl] -3,4- dihydro -2- naphthalenones, chemical constitution Shown in formula such as formula (I):
To achieve these goals, the technical solution adopted by the present invention is:
The Ai Le comprises the following steps for the preparation method of Buddhist nun's intermediate:
(1) 6- ethyl -7- methoxyl group -3,4- dihydro -2- naphthalenones are prepared:By the bromo- 7- methoxyl groups -3,4- dihydros -2- naphthalenes of 6- Ketone first reacts in the solvent reacted for boration with n-BuLi, then carries out boration reaction with organoboron reagent, obtains To 7- methoxyl group -3,4- dihydro -2- naphthalenone -6- boric acid, then by 7- methoxyl groups -3,4- dihydro -2- naphthalenone -6- boric acid and bromoethane Catalyzed coupling reaction is carried out in the system that metallic catalyst, inorganic salts, the solvent for catalyzed coupling reaction and water are constituted, is obtained To 6- ethyl -7- methoxyl group -3,4- dihydro -2- naphthalenones, reaction equation is:
(2) 6- ethyl -7- hydroxyl -3,4- dihydro -2- naphthalenones are prepared:By 6- ethyl -7- methoxyl group -3,4- dihydro -2- naphthalenes Reaction is hydrolyzed in ketone in hydrobromic acid aqueous solution, obtains 6- ethyl -7- hydroxyl -3,4- dihydro -2- naphthalenones, and reaction equation is:
(3) 6- ethyl -1,2,3,4- tetrahydrochysene -2- oxo -7- naphthyl triflates are prepared:By 6- ethyl -7- hydroxyls - 3,4- dihydro -2- naphthalenones carry out triflated reaction with trifluoromethyl sulfonic acid anhydride in acid binding agent alkali systems, obtain 6- Ethyl -1,2,3,4- tetrahydrochysene -2- oxo -7- naphthyl triflates, reaction equation is:
(4) 6- ethyls -7- [4- (morpholine -4- bases) piperidin-1-yl] -3,4- dihydro -2- naphthalenones are prepared:By 6- ethyl -1, 2,3,4- tetrahydrochysenes -2- oxos -7- naphthyls triflate is constituted with 4- (4- piperidyls) morpholines in acid binding agent alkali and solvent Substitution reaction is carried out in system, 6- ethyls -7- [4- (morpholine -4- bases) piperidin-1-yl] -3,4- dihydro -2- naphthalenones are obtained, reacted Formula is:
(5) 1,1- dimethyl -6- ethyls -7- [4- (morpholine -4- bases) piperidin-1-yl] -3,4- dihydro -2- naphthalenones are prepared: 6- ethyls -7- [4- (morpholine -4- bases) piperidin-1-yl] -3,4- dihydro -2- naphthalenones and iodomethane are constituted in base reagent and solvent System in carry out double methylation reactions, obtain 1,1- dimethyl -6- ethyls -7- [4- (morpholine -4- bases) piperidin-1-yl] -3, 4- dihydro -2- naphthalenones, reaction equation is:
Preferably, the solvent for being used for boration reaction described in step (1) is DMF, N, N- dimethyl Acetamide, tetrahydrofuran, toluene, dichloromethane, 1,2- dichloroethanes, chloroform, methyl tertiary butyl ether(MTBE) or 1,4- dioxane;Institute The organoboron reagent stated is connection boric acid pinacol ester, trimethylborate, triethyl borate or triisopropyl borate ester;Described metal Catalyst is four (triphenyl phosphorus) palladiums, [double (diphenylphosphino) ferrocene of 1,1'-] palladium chloride or two (triphenylphosphine) dichloros Change palladium;Described inorganic salts be potassium carbonate, sodium carbonate, potassium phosphate, lithium chloride, sodium bromide, KBr, potassium acetate, KI or Potassium chloride;The described solvent for catalyzed coupling reaction is N,N-dimethylformamide, DMAC N,N' dimethyl acetamide, tetrahydrochysene furan Mutter, toluene, dichloromethane, 1,2- dichloroethanes, chloroform, methyl tertiary butyl ether(MTBE) or 1,4- dioxane;Wherein, the bromo- 7- first of 6- Mol ratio between epoxide -3,4- dihydro -2- naphthalenones, n-BuLi, organoboron reagent, bromoethane, metallic catalyst, inorganic salts For 1.0: (1.1~1.3): (1.25~1.75): (0.9~1.1): (0.045~0.075): (1.45~2.00), for boric acid Change reaction solvent, the solvent for catalyzed coupling reaction, water for reaction medium, be not involved in reaction, be not required to limit its with it is anti- Answer the molar ratio of thing and reagent.
Preferably, the mass percent concentration of step (2) described hydrobromic acid aqueous solution is 48%, wherein, 6- ethyl -7- first The mol ratio of epoxide -3,4- dihydro -2- naphthalenones and hydrobromic acid aqueous solution is 1.0: (5.0~15.0).
Preferably, the acid binding agent alkali described in step (3) is triethylamine, diethylamine, DIPEA, pyridine, piperazine Pyridine, 2,6- lutidines or N-methylmorpholine;Wherein, 6- ethyls -7- hydroxyls -3,4- dihydro -2- naphthalenones, trifluoromethane sulfonic acid Mol ratio between acid anhydride, acid binding agent alkali is 1.0: (1.2~1.5): (1.5~2.5).
Preferably, the acid binding agent alkali described in step (4) is sodium methoxide, caustic alcohol, sodium tert-butoxide, potassium tert-butoxide or isopropanol Sodium;Described solvent is N,N-dimethylformamide, DMAC N,N' dimethyl acetamide, toluene or 1,4- dioxane;Wherein, 6- second Mole between base -1,2,3,4- tetrahydrochysene -2- oxo -7- naphthyls triflate, 4- (4- piperidyls) morpholine, acid binding agent alkali Than for 1.0: (1.8~2.7): (2.0~3.0), solvent for reaction medium, be not involved in reaction, be not required to limit itself and reactant With the molar ratio of reagent.
Preferably, the base reagent described in step (5) is sodium methoxide, caustic alcohol, sodium tert-butoxide or sodium isopropylate;Described is molten Agent is methanol, ethanol, the tert-butyl alcohol or isopropanol;Wherein, 6- ethyls -7- [4- (morpholine -4- bases) piperidin-1-yl] -3,4- dihydros - Mol ratio between 2- naphthalenones, iodomethane, base reagent is 1.0: (1.8~3.0): (1.8~3.0), solvent for reaction medium, Reaction is not involved in, is not required to limit itself and reactant and the molar ratio of reagent.
Preferably, the temperature of the boration reaction described in step (1) is -78 DEG C, and then 20~25 DEG C, the reaction time is 1 ~3 hours;The temperature of described catalyzed coupling reaction is 90~120 DEG C, and the reaction time is 12~24 hours;Step (2) is described Described hydrolysis temperature be 95~105 DEG C, the reaction time be 20~30 hours;Fluoroform sulphur described in step (3) The temperature of Esterification reaction is -5~25 DEG C, and the reaction time is 0.5~3 hour;The temperature of substitution reaction described in step (4) is 90~110 DEG C, the reaction time is 6~18 hours;The temperature of double methylation reactions described in step (5) is 60~80 DEG C, reaction Time is 2~6 hours.
The technical scheme that the present invention is provided has following technique effect:First, only making after being completed due to the reaction of each step normal The post processing and purifying of rule property are without column chromatography, and impurity is less, controllable, can directly carry out next step reaction, therefore Operation is simplified, while each step can obtain higher yield;Second, the process route initiation material and used of the present invention Reagent is easy to get, and the technical scheme of synthetic reaction rationally, can largely produce to meet the use demand of bulk drug, it is adaptable to industry Metaplasia is produced;Third, due to pollutant will not be produced in preparation process, thus environmental protection effect can be embodied.
Embodiment
Technical scheme is further elaborated below in conjunction with specific embodiment, it is clear that protection of the invention Scope is not limited to embodiment, and the other embodiment of the invention that those skilled in the art are done belongs to what the present invention was protected Scope.
Embodiment 1
A 6- ethyl -7- methoxyl group -3,4- dihydro -2- naphthalenones) are prepared:
The bromo- 7- methoxyl groups -3,4- dihydros -2- naphthalenones (10.0g, 39.2mmol) of 6- are dissolved in N,N-dimethylformamide (40mL), is cooled to -78 DEG C, and n-BuLi (47.0mmol) THF solution (40mL), -78 DEG C of reactant mixture is slowly added dropwise Stirring reaction 2 hours, is slowly added to connection boric acid pinacol ester (15.0g, 59.1mmol), -78 DEG C of stirring reactions of reactant mixture 1 Hour, 20 DEG C are risen to naturally and is stirred 10 hours, methanol (16mL) is slowly added to, and reaction solution concentrated by rotary evaporation obtains 7- methoxies to dry Base -3,4- dihydro -2- naphthalenone -6- boric acid, add bromoethane (4.0g, 36.7mmol), four (triphenyl phosphorus) palladiums (2.2g, 1.9mmol), potassium carbonate (8.0g, 57.9mmol), DMF (40mL) and water (25mL), reactant mixture adds Hot to 95 DEG C are reacted 14 hours, and TLC point plates determine that reaction is finished, and reaction solution is down to room temperature, and concentrated by rotary evaporation adds acetic acid second to dry Ester is extracted, and salt washing, magnesium sulfate is dried, and concentrated by rotary evaporation is to doing, and ethyl acetate and n-hexane mixed solvent are recrystallized, and obtain 6- Ethyl -7- methoxyl group -3,4- dihydro -2- naphthalenones, off-white powder (6.4g), yield 80%.
B 6- ethyl -7- hydroxyl -3,4- dihydro -2- naphthalenones) are prepared:
6- ethyl -7- methoxyl group -3,4- dihydro -2- naphthalenones (3.0g, 14.7mmol) and the hydrogen of mass percent concentration 48% The bromic acid aqueous solution (21.8g, 129.3mmol) is added in reaction bulb, and reactant mixture is added to 100 DEG C, return stirring reaction 24 Hour, TLC point plates determine that reaction is finished, and reaction solution is down to 0-5 DEG C, and it is 2 to be slowly added to 50% sodium hydroxide solution regulation pH value, The crystallization 3h at 0-5 DEG C, filtering, filter cake is recrystallized with ethyl acetate and n-hexane mixed solvent, obtains 6- ethyl -7- hydroxyls Base -3,4- dihydro -2- naphthalenones, off-white powder (2.7g), yield 97%.
C 6- ethyl -1,2,3,4- tetrahydrochysene -2- oxo -7- naphthyl triflates) are prepared:
6- ethyl -7- hydroxyl -3,4- dihydro -2- naphthalenones (2.5g, 13.1mmol) be dissolved in triethylamine (2.7g, 26.3mmol), it is slowly added dropwise trifluoromethyl sulfonic acid anhydride (4.8g, 17.0mmol), 20 DEG C of stirring reactions 2 hours, TLC points plate is determined Reaction is finished, and by post-processing and purifying, obtains 6- ethyls -1,2,3,4- tetrahydrochysene -2- oxo -7- naphthyl triflates, Light yellow solid (3.5g), yield 83%.
D 6- ethyls -7- [4- (morpholine -4- bases) piperidin-1-yl] -3,4- dihydro -2- naphthalenones) are prepared:
6- ethyl -1,2,3,4- tetrahydrochysene -2- oxo -7- naphthyls triflates (3.5g, 10.9mmol) are dissolved in N, N- Dimethylformamide (10mL), adds 4- (4- piperidyls) morpholine (3.7g, 21.7mmol), sodium methoxide (1.5g, 27.8mmol), 100 DEG C of reactant mixture stirring reaction 8 hours, TLC point plates determine that reaction is finished, and reaction solution is down to room temperature, add water (4mL), It is cooled to -10 DEG C of crystallizations 3 hours, filtering obtains 6- ethyls -7- [4- (morpholine -4- bases) piperidin-1-yl] -3,4- dihydro -2- naphthalenes Ketone, white solid (3.4g), yield 91%.
E 1,1- dimethyl -6- ethyls -7- [4- (morpholine -4- bases) piperidin-1-yl] -3,4- dihydro -2- naphthalenones) are prepared:
6- ethyls -7- [4- (morpholine -4- bases) piperidin-1-yl] -3,4- dihydro -2- naphthalenones (3.4g, 9.9mmol) are dissolved in first Alcohol (10mL), is slowly added to sodium methoxide (1.1g, 20.4mmol), is cooled to -10 DEG C or so, be added dropwise iodomethane (2.8g, 19.7mmol), 65 DEG C of reactant mixture stirring reaction 4 hours, TLC point plates determine that reaction is finished, and reaction solution is down to room temperature, add Watery hydrochloric acid is adjusted to neutrality, and concentrated by rotary evaporation adds ethyl acetate extraction to dry, and magnesium sulfate is dried, concentrated by rotary evaporation to dry, methanol weight Crystallization, obtains 1,1- dimethyl -6- ethyls -7- [4- (morpholine -4- bases) piperidin-1-yl] -3,4- dihydro -2- naphthalenones, off-white color is solid Body (3.1g), yield 85%.
Embodiment 2
A 6- ethyl -7- methoxyl group -3,4- dihydro -2- naphthalenones) are prepared:
Bromo- 7- methoxyl groups -3, the 4- dihydro -2- naphthalenones (10.0g, 39.2mmol) of 6- are dissolved in tetrahydrofuran (40mL), cooling To -78 DEG C, n-BuLi (50.5mmol) THF solution (40mL), -78 DEG C of stirring reactions of reactant mixture 1.5 is slowly added dropwise Hour, trimethylborate (6.8g, 65.4mmol) is slowly added to, -78 DEG C of stirring reactions of reactant mixture 1 hour rise to naturally 20 DEG C are stirred 10 hours, are slowly added to methanol (15mL), and reaction solution concentrated by rotary evaporation obtains 7- methoxyl group -3,4- dihydros -2- to dry Naphthalenone -6- boric acid, adds bromoethane (4.5g, 41.3mmol), [1,1'- double (diphenylphosphino) ferrocene] palladium chloride (2.0g, 2.9mmol), sodium carbonate (8.3g, 78.3mmol), DMF (45mL) and water (30mL), reaction are mixed Compound is heated to 100 DEG C and reacted 24 hours, and TLC point plates determine that reaction is finished, and reaction solution is down to room temperature, concentrated by rotary evaporation to dry, plus Enter ethyl acetate extraction, salt washing, magnesium sulfate is dried, and concentrated by rotary evaporation is to doing, and ethyl acetate and n-hexane mixed solvent are weighed Crystallization, obtains 6- ethyl -7- methoxyl group -3,4- dihydro -2- naphthalenones, off-white powder (6.8g), yield 85%.
B 6- ethyl -7- hydroxyl -3,4- dihydro -2- naphthalenones) are prepared:
6- ethyl -7- methoxyl group -3,4- dihydro -2- naphthalenones (3.0g, 14.7mmol) and the hydrogen of mass percent concentration 48% The bromic acid aqueous solution (33.7g, 199.9mmol) is added in reaction bulb, and reactant mixture is added to 105 DEG C, return stirring reaction 20 Hour, TLC point plates determine that reaction is finished, and reaction solution is down to 0-5 DEG C, and it is 2 to be slowly added to 50% sodium hydroxide solution regulation pH value, The crystallization 4h at 0-5 DEG C, filtering, filter cake is recrystallized with ethyl acetate and n-hexane mixed solvent, obtains 6- ethyl -7- hydroxyls Base -3,4- dihydro -2- naphthalenones, off-white powder (2.6g), yield 93%.
C 6- ethyl -1,2,3,4- tetrahydrochysene -2- oxo -7- naphthyl triflates) are prepared:
6- ethyl -7- hydroxyl -3,4- dihydro -2- naphthalenones (2.5g, 13.1mmol) are dissolved in N, N- diisopropylethylamine (4.2g, 32.5mmol), is slowly added dropwise trifluoromethyl sulfonic acid anhydride (5.5g, 19.5mmol), 25 DEG C of stirring reactions 1 hour, TLC points Plate determines that reaction is finished, and by post-processing and purifying, obtains 6- ethyls -1,2,3,4- tetrahydrochysene -2- oxo -7- naphthyl fluoroform sulphurs Acid esters, light yellow solid (3.6g), yield 85%.
D 6- ethyls -7- [4- (morpholine -4- bases) piperidin-1-yl] -3,4- dihydro -2- naphthalenones) are prepared:
6- ethyl -1,2,3,4- tetrahydrochysene -2- oxo -7- naphthyls triflates (3.5g, 10.9mmol) are dissolved in toluene (12mL), adds 4- (4- piperidyls) morpholine (5.0g, 29.4mmol), caustic alcohol (2.2g, 32.3mmol), reactant mixture 110 DEG C of stirring reactions 6 hours, TLC point plates determine that reaction is finished, and reaction solution is down to room temperature, add water (5mL), are cooled to -10 DEG C Crystallization 4 hours, filtering, obtains 6- ethyls -7- [4- (morpholine -4- bases) piperidin-1-yl] -3,4- dihydro -2- naphthalenones, white solid (3.4g), yield 91%.
E 1,1- dimethyl -6- ethyls -7- [4- (morpholine -4- bases) piperidin-1-yl] -3,4- dihydro -2- naphthalenones) are prepared:
6- ethyls -7- [4- (morpholine -4- bases) piperidin-1-yl] -3,4- dihydro -2- naphthalenones (3.4g, 9.9mmol) are dissolved in second Alcohol (15mL), is slowly added to caustic alcohol (2.0g, 29.4mmol), is cooled to -10 DEG C or so, be added dropwise iodomethane (4.1g, 28.9mmol), 60 DEG C of reactant mixture stirring reaction 6 hours, TLC point plates determine that reaction is finished, and reaction solution is down to room temperature, add Watery hydrochloric acid is adjusted to neutrality, and concentrated by rotary evaporation adds ethyl acetate extraction to dry, and magnesium sulfate is dried, concentrated by rotary evaporation to dry, methanol weight Crystallization, obtains 1,1- dimethyl -6- ethyls -7- [4- (morpholine -4- bases) piperidin-1-yl] -3,4- dihydro -2- naphthalenones, off-white color is solid Body (3.0g), yield 82%.
Embodiment 3
A 6- ethyl -7- methoxyl group -3,4- dihydro -2- naphthalenones) are prepared:
Bromo- 7- methoxyl groups -3, the 4- dihydro -2- naphthalenones (10.0g, 39.2mmol) of 6- are dissolved in toluene (50mL), are cooled to -78 DEG C, n-BuLi (43.3mmol) THF solution (40mL) is slowly added dropwise, -78 DEG C of stirring reactions of reactant mixture 1 hour are delayed Slow to add triisopropyl borate ester (9.3g, 49.4mmol), -78 DEG C of stirring reactions of reactant mixture 1 hour rise to 20 DEG C and stirred naturally Mix 12 hours, be slowly added to methanol (15mL), reaction solution concentrated by rotary evaporation to dry, obtain 7- methoxyl group -3,4- dihydro -2- naphthalenones - 6- boric acid, adds bromoethane (4.3g, 39.5mmol), two (triphenylphosphine) palladium chlorides (1.3g, 1.9mmol), lithium chloride (2.5g, 59.0mmol), DMF (40mL) and water (30mL), it is small that reactant mixture is heated to 95 DEG C of reactions 14 When, TLC point plates determine that reaction is finished, and reaction solution is down to room temperature, and concentrated by rotary evaporation adds ethyl acetate extraction, salt washing, sulphur to dry Sour magnesium is dried, and concentrated by rotary evaporation is to doing, and ethyl acetate and n-hexane mixed solvent are recrystallized, and obtain 6- ethyl -7- methoxyl group -3, 4- dihydro -2- naphthalenones, off-white powder (6.8g), yield 85%.
B 6- ethyl -7- hydroxyl -3,4- dihydro -2- naphthalenones) are prepared:
6- ethyl -7- methoxyl group -3,4- dihydro -2- naphthalenones (3.0g, 14.7mmol) and the hydrogen of mass percent concentration 48% The bromic acid aqueous solution (13.6g, 80.7mmol) is added in reaction bulb, and reactant mixture is added to 95 DEG C, and return stirring reaction 30 is small When, TLC point plates determine that reaction is finished, and reaction solution is down to 0-5 DEG C, and it is 2-3 to be slowly added to 50% sodium hydroxide solution regulation pH value, The crystallization 5h at 0-5 DEG C, filtering, filter cake is recrystallized with ethyl acetate and n-hexane mixed solvent, obtains 6- ethyl -7- hydroxyls Base -3,4- dihydro -2- naphthalenones, off-white powder (2.5g), yield 89%.
C 6- ethyl -1,2,3,4- tetrahydrochysene -2- oxo -7- naphthyl triflates) are prepared:
6- ethyl -7- hydroxyl -3,4- dihydro -2- naphthalenones (2.5g, 13.1mmol) are dissolved in pyridine (1.6g, 20.2mmol), It is slowly added dropwise trifluoromethyl sulfonic acid anhydride (4.5g, 16.0mmol), 0 DEG C of stirring reaction 3 hours, TLC point plates determine that reaction is finished, warp Later handle and purify, obtain 6- ethyls -1,2,3,4- tetrahydrochysene -2- oxo -7- naphthyl triflates, light yellow solid (3.5g), yield 83%.
D 6- ethyls -7- [4- (morpholine -4- bases) piperidin-1-yl] -3,4- dihydro -2- naphthalenones) are prepared:
6- ethyl -1,2,3,4- tetrahydrochysene -2- oxo -7- naphthyls triflates (3.5g, 10.9mmol) are dissolved in 1,4- Dioxane (15mL), adds 4- (4- piperidyls) morpholine (3.4g, 20.0mmol), sodium tert-butoxide (2.1g, 21.9mmol), instead 90 DEG C of mixture stirring reaction 18 hours is answered, TLC point plates determine that reaction is finished, reaction solution is down to room temperature, add water (5mL), it is cold But to -10 DEG C of crystallizations 4 hours, filtering obtains 6- ethyls -7- [4- (morpholine -4- bases) piperidin-1-yl] -3,4- dihydro -2- naphthalenones, White solid (3.4g), yield 91%.
E 1,1- dimethyl -6- ethyls -7- [4- (morpholine -4- bases) piperidin-1-yl] -3,4- dihydro -2- naphthalenones) are prepared:
6- ethyls -7- [4- (morpholine -4- bases) piperidin-1-yl] -3,4- dihydro -2- naphthalenones (3.4g, 9.9mmol) are dissolved in different Propyl alcohol (15mL), is slowly added to sodium isopropylate (1.5g, 18.3mmol), is cooled to -10 DEG C or so, be added dropwise iodomethane (2.6g, 18.3mmol), 80 DEG C of reactant mixture stirring reaction 2 hours, TLC point plates determine that reaction is finished, and reaction solution is down to room temperature, add Watery hydrochloric acid is adjusted to neutrality, and concentrated by rotary evaporation adds ethyl acetate extraction to dry, and magnesium sulfate is dried, concentrated by rotary evaporation to dry, methanol weight Crystallization, obtains 1,1- dimethyl -6- ethyls -7- [4- (morpholine -4- bases) piperidin-1-yl] -3,4- dihydro -2- naphthalenones, off-white color is solid Body (3.2g), yield 87%.

Claims (7)

1. a kind of Ai Le replace Buddhist nun's intermediate preparation method, the intermediate be 1,1- dimethyl -6- ethyls -7- [4- (morpholine - 4- yls) piperidin-1-yl] -3,4- dihydro -2- naphthalenones, it is characterised in that the preparation method of the intermediate comprises the following steps:
(1) 6- ethyl -7- methoxyl group -3,4- dihydro -2- naphthalenones are prepared:The bromo- 7- methoxyl groups -3,4- dihydros -2- naphthalenones of 6- are existed In the solvent reacted for boration, first reacted with n-BuLi, then carry out boration reaction with organoboron reagent, obtain 7- Methoxyl group -3,4- dihydro -2- naphthalenone -6- boric acid, then by 7- methoxyl groups -3,4- dihydro -2- naphthalenone -6- boric acid and bromoethane in gold Catalyzed coupling reaction is carried out in the system that metal catalyst, inorganic salts, the solvent for catalyzed coupling reaction and water are constituted, 6- is obtained Ethyl -7- methoxyl group -3,4- dihydro -2- naphthalenones;
(2) 6- ethyl -7- hydroxyl -3,4- dihydro -2- naphthalenones are prepared:6- ethyl -7- methoxyl group -3,4- dihydro -2- naphthalenones are existed Reaction is hydrolyzed in hydrobromic acid aqueous solution, 6- ethyl -7- hydroxyl -3,4- dihydro -2- naphthalenones are obtained;
(3) 6- ethyl -1,2,3,4- tetrahydrochysene -2- oxo -7- naphthyl triflates are prepared:By 6- ethyl -7- hydroxyls -3,4- Dihydro -2- naphthalenones and trifluoromethyl sulfonic acid anhydride carry out triflated reaction in acid binding agent alkali systems, obtain 6- ethyls - 1,2,3,4- tetrahydrochysene -2- oxo -7- naphthyl triflates;
(4) 6- ethyls -7- [4- (morpholine -4- bases) piperidin-1-yl] -3,4- dihydro -2- naphthalenones are prepared:By 6- ethyl -1,2,3, The system that 4- tetrahydrochysenes -2- oxos -7- naphthyls triflate is constituted with 4- (4- piperidyls) morpholines in acid binding agent alkali and solvent Middle carry out substitution reaction, obtains 6- ethyls -7- [4- (morpholine -4- bases) piperidin-1-yl] -3,4- dihydro -2- naphthalenones;
(5) 1,1- dimethyl -6- ethyls -7- [4- (morpholine -4- bases) piperidin-1-yl] -3,4- dihydro -2- naphthalenones are prepared:By 6- The body that ethyl -7- [4- (morpholine -4- bases) piperidin-1-yl] -3,4- dihydro -2- naphthalenones are constituted with iodomethane in base reagent and solvent Double methylation reactions are carried out in system, 1,1- dimethyl -6- ethyls -7- [4- (morpholine -4- bases) piperidin-1-yl] -3,4- bis- is obtained Hydrogen -2- naphthalenones.
2. a kind of Ai Le according to claim 1 replaces the preparation method of Buddhist nun's intermediate, it is characterised in that step (1) is described Be used for boration react solvent be N,N-dimethylformamide, DMAC N,N' dimethyl acetamide, tetrahydrofuran, toluene, dichloro Methane, 1,2- dichloroethanes, chloroform, methyl tertiary butyl ether(MTBE) or 1,4- dioxane;Described organoboron reagent is connection boric acid frequency That alcohol ester, trimethylborate, triethyl borate or triisopropyl borate ester;Described metallic catalyst be four (triphenyl phosphorus) palladiums, [double (diphenylphosphino) ferrocene of 1,1'-] palladium chloride or two (triphenylphosphine) palladium chlorides;Described inorganic salts are carbonic acid Potassium, sodium carbonate, potassium phosphate, lithium chloride, sodium bromide, KBr, potassium acetate, KI or potassium chloride;It is described to be used to be catalyzed idol The solvent of connection reaction is N,N-dimethylformamide, DMAC N,N' dimethyl acetamide, tetrahydrofuran, toluene, dichloromethane, 1,2- bis- Chloroethanes, chloroform, methyl tertiary butyl ether(MTBE) or 1,4- dioxane;Wherein, bromo- 7- methoxyl groups -3,4- dihydro -2- naphthalenones of 6-, just Mol ratio between butyl lithium, organoboron reagent, bromoethane, metallic catalyst, inorganic salts is 1.0: (1.1~1.3): (1.25 ~1.75): (0.9~1.1): (0.045~0.075): (1.45~2.00).
3. a kind of Ai Le according to claim 1 replaces the preparation method of Buddhist nun's intermediate, it is characterised in that step (2) is described The mass percent concentration of hydrobromic acid aqueous solution is 48%;Wherein, 6- ethyls -7- methoxyl groups -3,4- dihydro -2- naphthalenones and hydrogen bromine The mol ratio of aqueous acid is 1.0: (5.0~15.0).
4. a kind of Ai Le according to claim 1 replaces the preparation method of Buddhist nun's intermediate, it is characterised in that step (3) is described Acid binding agent alkali be triethylamine, diethylamine, N, N- diisopropylethylamine, pyridine, piperidines, 2,6- lutidines or N- methyl Quinoline;Wherein, the mol ratio between 6- ethyls -7- hydroxyls -3,4- dihydro -2- naphthalenones, trifluoromethyl sulfonic acid anhydride, acid binding agent alkali is 1.0: (1.2~1.5): (1.5~2.5).
5. a kind of Ai Le according to claim 1 replaces the preparation method of Buddhist nun's intermediate, it is characterised in that step (4) is described Acid binding agent alkali be sodium methoxide, caustic alcohol, sodium tert-butoxide, potassium tert-butoxide or sodium isopropylate;Described solvent is N, N- dimethyl Formamide, DMAC N,N' dimethyl acetamide, toluene or 1,4- dioxane;Wherein, 6- ethyls -1,2,3,4- tetrahydrochysene -2- oxos -7- Mol ratio between naphthyl triflate, 4- (4- piperidyls) morpholine, acid binding agent alkali is 1.0: (1.8~2.7): (2.0~ 3.0)。
6. a kind of Ai Le according to claim 1 replaces the preparation method of Buddhist nun's intermediate, it is characterised in that step (5) is described Base reagent be sodium methoxide, caustic alcohol, sodium tert-butoxide or sodium isopropylate;Described solvent is methanol, ethanol, the tert-butyl alcohol or isopropyl Alcohol;Wherein, between 6- ethyls -7- [4- (morpholine -4- bases) piperidin-1-yl] -3,4- dihydro -2- naphthalenones, iodomethane, base reagent Mol ratio is 1.0: (1.8~3.0): (1.8~3.0).
7. a kind of Ai Le according to claim 1 replaces the preparation method of Buddhist nun's intermediate, it is characterised in that step (1) is described Boration reaction temperature be -78 DEG C, then 20~25 DEG C, the reaction time be 1~3 hour;Described catalyzed coupling reaction Temperature be 90~120 DEG C, the reaction time be 12~24 hours;The temperature of described hydrolysis described in step (2) is 95 ~105 DEG C, the reaction time is 20~30 hours;The temperature of triflated reaction described in step (3) is -5~25 DEG C, Reaction time is 0.5~3 hour;The temperature of substitution reaction described in step (4) is 90~110 DEG C, and the reaction time is 6~18 small When;The temperature of double methylation reactions described in step (5) is 60~80 DEG C, and the reaction time is 2~6 hours.
CN201710263664.0A 2017-04-21 2017-04-21 A kind of Ai Le replaces the preparation method of Buddhist nun's intermediate Pending CN107011245A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11014919B2 (en) 2018-12-07 2021-05-25 Fresenius Kabi Ipsum S.R.L. Process for the preparation of alectinib
US11098037B2 (en) 2017-07-05 2021-08-24 Fresenius Kabi Oncology Ltd. Process for preparing alectinib or a pharmaceutically acceptable salt thereof

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CN103052386A (en) * 2010-08-20 2013-04-17 中外制药株式会社 Composition containing tetracyclic compound
CN105777710A (en) * 2016-04-05 2016-07-20 湖南欧亚生物有限公司 Synthesis method of Alectinib

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103052386A (en) * 2010-08-20 2013-04-17 中外制药株式会社 Composition containing tetracyclic compound
CN105777710A (en) * 2016-04-05 2016-07-20 湖南欧亚生物有限公司 Synthesis method of Alectinib

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11098037B2 (en) 2017-07-05 2021-08-24 Fresenius Kabi Oncology Ltd. Process for preparing alectinib or a pharmaceutically acceptable salt thereof
US11465999B2 (en) 2017-07-05 2022-10-11 Fresenius Kabi Oncology Ltd. Process for preparing Alectinib or a pharmaceutically acceptable salt thereof
US11014919B2 (en) 2018-12-07 2021-05-25 Fresenius Kabi Ipsum S.R.L. Process for the preparation of alectinib

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