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RU2001123589A - METHOD FOR REDUCING THE CONTENT OF 3-DIMETHYLAMINO-2-PhenylPROPHYLIC ACID ETHYL ETHER IN SOLUTIONS OF 2-DIMETHYLAMINO-1-Phenyl-3-Cyclohexene-1-Carboxylic Acid Ethylene Ether Solutions - Google Patents

METHOD FOR REDUCING THE CONTENT OF 3-DIMETHYLAMINO-2-PhenylPROPHYLIC ACID ETHYL ETHER IN SOLUTIONS OF 2-DIMETHYLAMINO-1-Phenyl-3-Cyclohexene-1-Carboxylic Acid Ethylene Ether Solutions

Info

Publication number
RU2001123589A
RU2001123589A RU2001123589/04A RU2001123589A RU2001123589A RU 2001123589 A RU2001123589 A RU 2001123589A RU 2001123589/04 A RU2001123589/04 A RU 2001123589/04A RU 2001123589 A RU2001123589 A RU 2001123589A RU 2001123589 A RU2001123589 A RU 2001123589A
Authority
RU
Russia
Prior art keywords
dimethylamino
solutions
cyclohexene
phenyl
carboxylic acid
Prior art date
Application number
RU2001123589/04A
Other languages
Russian (ru)
Other versions
RU2201918C1 (en
Inventor
Марко ТАЙС
Вольфганг ФАЛЬКЕНБЕРГ
Ульрих Шнайдер
Original Assignee
Кнолль Акциенгезельшафт
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19902590A external-priority patent/DE19902590A1/en
Application filed by Кнолль Акциенгезельшафт filed Critical Кнолль Акциенгезельшафт
Application granted granted Critical
Publication of RU2201918C1 publication Critical patent/RU2201918C1/en
Publication of RU2001123589A publication Critical patent/RU2001123589A/en

Links

Claims (1)

Способ снижения содержания этилового эфира 3-диметиламино-2-фенилпропионовой кислоты в загрязненном указанным эфиром растворе этилового эфира 2-диметиламино-1-фенил-3-циклогексен-1-карбоновой кислоты в не смешивающемся с водой растворителе, который включает добавление в этот раствор 0,5-2,0 эквивалента карбоновой кислоты на моль этилового эфира 2-диметиламино-1-фенил-3-циклогексен-1-карбоновой кислоты и перемешивание полученной смеси при температуре 50-100°С, причем содержание этилового эфира 3-диметиламино-2-фенилпропионовой кислоты составляет менее 0,10%.A method for reducing the content of 3-dimethylamino-2-phenylpropionic acid ethyl ester in a solution of 2-dimethylamino-1-phenyl-3-cyclohexene-1-carboxylic acid ethyl ester contaminated with said ester in a water-immiscible solvent, which comprises adding 0 to this solution 5-2.0 equivalents of carboxylic acid per mole of 2-dimethylamino-1-phenyl-3-cyclohexene-1-carboxylic acid ethyl ester and stirring the resulting mixture at a temperature of 50-100 ° C, the content of 3-dimethylamino-2 ethyl ester α-phenylpropionic acid t less than 0.10%.
RU2001123589/04A 1999-01-22 2000-01-15 Method of reduction of content of 3-dimethyl-amino-2-phenylpropionic acid ethyl ester in solution of 2-dimethylamino-1-phenyl-3-cyclo-hexene-1-carboxylic acid ethyl ester RU2201918C1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19902590.8 1999-01-22
DE19902590A DE19902590A1 (en) 1999-01-22 1999-01-22 Removal of ethyl 3-dimethylamino-2-phenylpropionate from ethyl 2-dimethylamino-1-phenyl-3-cyclohexene-1-carboxylate solution comprises treatment with carboxylic acid

Publications (2)

Publication Number Publication Date
RU2201918C1 RU2201918C1 (en) 2003-04-10
RU2001123589A true RU2001123589A (en) 2004-10-10

Family

ID=7895156

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2001123589/04A RU2201918C1 (en) 1999-01-22 2000-01-15 Method of reduction of content of 3-dimethyl-amino-2-phenylpropionic acid ethyl ester in solution of 2-dimethylamino-1-phenyl-3-cyclo-hexene-1-carboxylic acid ethyl ester

Country Status (21)

Country Link
US (1) US7273947B1 (en)
EP (1) EP1144361B1 (en)
JP (1) JP3635032B2 (en)
KR (1) KR20010102987A (en)
CN (1) CN1177805C (en)
AT (1) ATE273947T1 (en)
AU (1) AU766196B2 (en)
BR (1) BR0007646A (en)
CA (1) CA2359080C (en)
CZ (1) CZ20012602A3 (en)
DE (2) DE19902590A1 (en)
ES (1) ES2226777T3 (en)
HK (1) HK1050181B (en)
HU (1) HUP0200531A3 (en)
IL (2) IL144203A0 (en)
MX (1) MXPA01007249A (en)
NO (1) NO20013528D0 (en)
RU (1) RU2201918C1 (en)
TW (1) TW462958B (en)
WO (1) WO2000043353A1 (en)
ZA (1) ZA200105537B (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1768704B1 (en) 1968-06-21 1971-11-11 Goedecke Ag Process for the separation of 3-trans-dimethylamino-4-phenyl-4-trans-carbaethoxy-delta? -Cyclohexene
US3679732A (en) * 1969-04-17 1972-07-25 Warner Lambert Co Process for obtaining 3-trans-dimethylamino-4-phenyl-4-trans-carbethoxy-{66 {11 -cyclohexene
DE2261462B1 (en) 1972-12-15 1974-04-25 Goedecke Ag Process for the separation of (+) - 3r-N-dimethylamino-4c-phenyl-4t-aethoxycarbonyl-cyclohexene (1)

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