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GB565474A - A process of synthesising aldehydes and lactones - Google Patents

A process of synthesising aldehydes and lactones

Info

Publication number
GB565474A
GB565474A GB18254/42A GB1825442A GB565474A GB 565474 A GB565474 A GB 565474A GB 18254/42 A GB18254/42 A GB 18254/42A GB 1825442 A GB1825442 A GB 1825442A GB 565474 A GB565474 A GB 565474A
Authority
GB
United Kingdom
Prior art keywords
dimethyl
hydroxypropionaldehyde
lactone
hydroxy
formation
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB18254/42A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Oil Products Co
Original Assignee
National Oil Products Co
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
Application filed by National Oil Products Co filed Critical National Oil Products Co
Publication of GB565474A publication Critical patent/GB565474A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C47/00—Compounds having —CHO groups
    • C07C47/02—Saturated compounds having —CHO groups bound to acyclic carbon atoms or to hydrogen
    • C07C47/19—Saturated compounds having —CHO groups bound to acyclic carbon atoms or to hydrogen containing hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
    • C07C45/67—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton
    • C07C45/68—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms
    • C07C45/72—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms by reaction of compounds containing >C = O groups with the same or other compounds containing >C = O groups
    • C07C45/75—Reactions with formaldehyde
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/78—Separation; Purification; Stabilisation; Use of additives
    • C07C45/80—Separation; Purification; Stabilisation; Use of additives by liquid-liquid treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A halogenated aliphatic hydrocarbon is used as solvent for the recovery of the product in (a) the condensation of formaldehyde with isobutyraldehyde to give a : a - dimethyl - b - hydroxypropionaldehyde, (b) the formation of a -hydroxy-b : b -dimethyl-g -butyrolactone from a : a -dimethyl - b - hydroxypropionaldehyde by converting the latter first into its bisulphite compound and then into the cyanhydrin, followed by hydrolysis and formation of the lactone by heating the resulting acid with water, (c) the extraction of the l-lactone in the resolution of the racemic mixture of a -hydroxy-b : b -dimethyl - g - butyrolactones. In examples, ethylenedichloride, methylenechloride and chloroform are used as solvents in the above processes; propylenedichloride and trichlorethylene are also mentioned.
GB18254/42A 1941-12-13 1942-12-23 A process of synthesising aldehydes and lactones Expired GB565474A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US565474XA 1941-12-13 1941-12-13

Publications (1)

Publication Number Publication Date
GB565474A true GB565474A (en) 1944-11-13

Family

ID=22005119

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18254/42A Expired GB565474A (en) 1941-12-13 1942-12-23 A process of synthesising aldehydes and lactones

Country Status (1)

Country Link
GB (1) GB565474A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001049671A1 (en) * 1999-12-29 2001-07-12 Oxis Isle Of Man, Limited Methods for resolving racemic mixtures of 5-substituted 4-hydroxy-2-furanones

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001049671A1 (en) * 1999-12-29 2001-07-12 Oxis Isle Of Man, Limited Methods for resolving racemic mixtures of 5-substituted 4-hydroxy-2-furanones
US6613919B2 (en) 1999-12-29 2003-09-02 Oxis Isle Of Man Method for resolving racemic mixtures of 5-substituted 4-hydroxy-2-furanones

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