GB674710A - A method of preparing aliphatic acyl hydroxypolycarboxylic acid anhydrides - Google Patents

A method of preparing aliphatic acyl hydroxypolycarboxylic acid anhydrides

Info

Publication number
GB674710A
GB674710A GB21243/50A GB2124350A GB674710A GB 674710 A GB674710 A GB 674710A GB 21243/50 A GB21243/50 A GB 21243/50A GB 2124350 A GB2124350 A GB 2124350A GB 674710 A GB674710 A GB 674710A
Authority
GB
United Kingdom
Prior art keywords
acid
anhydride
acetic
distilled
reacted
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
GB21243/50A
Inventor
Charles Frank Fuchs
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.)
EMULSOL CORP
Original Assignee
EMULSOL CORP
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 EMULSOL CORP filed Critical EMULSOL CORP
Priority to GB21243/50A priority Critical patent/GB674710A/en
Publication of GB674710A publication Critical patent/GB674710A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
    • C07C69/34—Esters of acyclic saturated polycarboxylic acids having an esterified carboxyl group bound to an acyclic carbon atom
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/54—Preparation of carboxylic acid anhydrides
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/08—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
    • C07C69/34—Esters of acyclic saturated polycarboxylic acids having an esterified carboxyl group bound to an acyclic carbon atom
    • C07C69/40—Succinic acid esters

Abstract

Acyl hydroxy polycarboxylic acid anhydrides, in which the acyl radical is at least one member from the group consisting of acetyl and propionyl radicals, are prepared by reacting an hydroxypolycarboxylic acid with an anhydride of at least one acid from the group consisting of acetic and propionic acids in amounts of 1 mol. of the anhydride for each alcoholic hydroxy group present plus an additional mol. for each two carboxylic acid groups present, heating the reaction mixture to distil off the acid so formed and recovering the acyl hydroxypolycarboxylic acid anhydride formed. Preferably an acidic material, e.g. sulphuric acid or phosphoric acids, is used as catalyst and the hydroxy polycarboxylic acid is used in a substantially dry form. In the examples: (a) tartaric acid is reacted with acetic anhydride, the acetic acid formed is distilled off and diacetyl tartaric acid anhydride is left; (b) tartaric acid is reacted with propionic acid anhydride; the propionic acid formed is distilled off, leaving dipropionyl tartaric acid anhydride; (c) citric acid is reacted with acetic anhydride; the acetic acid formed is distilled off and acetyl citric acid anhydride is left. Other hydroxy polycarboxylic acids, e.g. malic acid, may also be used as starting materials.
GB21243/50A 1950-08-28 1950-08-28 A method of preparing aliphatic acyl hydroxypolycarboxylic acid anhydrides Expired GB674710A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB21243/50A GB674710A (en) 1950-08-28 1950-08-28 A method of preparing aliphatic acyl hydroxypolycarboxylic acid anhydrides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB21243/50A GB674710A (en) 1950-08-28 1950-08-28 A method of preparing aliphatic acyl hydroxypolycarboxylic acid anhydrides

Publications (1)

Publication Number Publication Date
GB674710A true GB674710A (en) 1952-06-25

Family

ID=10159618

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21243/50A Expired GB674710A (en) 1950-08-28 1950-08-28 A method of preparing aliphatic acyl hydroxypolycarboxylic acid anhydrides

Country Status (1)

Country Link
GB (1) GB674710A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0085884A1 (en) * 1982-02-06 1983-08-17 Bayer Ag Acylanhydrocitric-acid vinyl esters and their preparation
CN109020932A (en) * 2018-09-15 2018-12-18 广州立达尔生物科技股份有限公司 A method of preparing high-purity citric acid acid anhydride

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0085884A1 (en) * 1982-02-06 1983-08-17 Bayer Ag Acylanhydrocitric-acid vinyl esters and their preparation
CN109020932A (en) * 2018-09-15 2018-12-18 广州立达尔生物科技股份有限公司 A method of preparing high-purity citric acid acid anhydride

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