GB515756A - Manufacture of ª‡-chloro-ª‰-alkoxybutyraldehydes - Google Patents

Manufacture of ª‡-chloro-ª‰-alkoxybutyraldehydes

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Publication number
GB515756A
GB515756A GB1739638A GB1739638A GB515756A GB 515756 A GB515756 A GB 515756A GB 1739638 A GB1739638 A GB 1739638A GB 1739638 A GB1739638 A GB 1739638A GB 515756 A GB515756 A GB 515756A
Authority
GB
United Kingdom
Prior art keywords
alpha
chloro
alkaline
butyraldehydes
alkoxy
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
GB1739638A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1739638A priority Critical patent/GB515756A/en
Publication of GB515756A publication Critical patent/GB515756A/en
Expired legal-status Critical Current

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Classifications

    • 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
    • C07C45/70—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 with functional groups containing oxygen only in singly bound form
    • C07C45/71—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 with functional groups containing oxygen only in singly bound form being hydroxy groups

Abstract

515,756. alpha-Chloro-#-alkoxy-butyraldehydes. GROVES, W. W. (I.G. Farbenindustrie Akt.- Ges.). June 11, 1938, No. 17396. [Class 2 (iii)] alpha-Chloro-#-alkoxy-butyraldehydes are prepared by reacting alpha-chloro-crotonic aldehyde with a lower saturated aliphatic primary alcohol ,e.g. methyl, ethyl or propyl alcohol, suitably in excess, in the presence of a small quantity of an alkaline agent at a temperature lower than about +10‹C., preferably between about -10‹C. and +10‹C. As alkaline agents there may be used any of the substances suitable for alkaline condensations; alkali metal hydroxides, such as sodium or potassium hydroxide are better than the carbonates or alcoholates of sodium or potassium, but these may likewise be used. In examples, alpha-chloro- #-methoxy- or alpha-chloro-#-ethoxy-butyraldehyde is prepared by dropping alpha-chlorocrotonic aldehyde slowly on to an excess of methyl or ethyl alcohol at 0‹-5‹C. rendered alkaline with caustic soda, and allowing to stand overnight at 0‹C. ; the product is obtained in 65 per cent. yield. by fractionating the acidified solution.
GB1739638A 1938-06-11 1938-06-11 Manufacture of ª‡-chloro-ª‰-alkoxybutyraldehydes Expired GB515756A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1739638A GB515756A (en) 1938-06-11 1938-06-11 Manufacture of ª‡-chloro-ª‰-alkoxybutyraldehydes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1739638A GB515756A (en) 1938-06-11 1938-06-11 Manufacture of ª‡-chloro-ª‰-alkoxybutyraldehydes

Publications (1)

Publication Number Publication Date
GB515756A true GB515756A (en) 1939-12-13

Family

ID=10094459

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1739638A Expired GB515756A (en) 1938-06-11 1938-06-11 Manufacture of ª‡-chloro-ª‰-alkoxybutyraldehydes

Country Status (1)

Country Link
GB (1) GB515756A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2504680A (en) * 1946-05-01 1950-04-18 Du Pont Preparation of alkoxy-substituted aldehydes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2504680A (en) * 1946-05-01 1950-04-18 Du Pont Preparation of alkoxy-substituted aldehydes

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