GB842725A - Methods of preparing diketodicarboxylic acid esters, and diketodicarboxylic acid esters when prepared by said methods - Google Patents

Methods of preparing diketodicarboxylic acid esters, and diketodicarboxylic acid esters when prepared by said methods

Info

Publication number
GB842725A
GB842725A GB32499/56A GB3249956A GB842725A GB 842725 A GB842725 A GB 842725A GB 32499/56 A GB32499/56 A GB 32499/56A GB 3249956 A GB3249956 A GB 3249956A GB 842725 A GB842725 A GB 842725A
Authority
GB
United Kingdom
Prior art keywords
diketodicarboxylic
acid esters
methods
prepared
formula
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
GB32499/56A
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.)
Spofa Spojene Farmaceuticke Zavody
Original Assignee
Spofa Spojene Farmaceuticke Zavody
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 Spofa Spojene Farmaceuticke Zavody filed Critical Spofa Spojene Farmaceuticke Zavody
Publication of GB842725A publication Critical patent/GB842725A/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
    • C07C69/66—Esters of carboxylic acids having esterified carboxylic groups bound to acyclic carbon atoms and having any of the groups OH, O—metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety
    • C07C69/67—Esters of carboxylic acids having esterified carboxylic groups bound to acyclic carbon atoms and having any of the groups OH, O—metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety of saturated acids
    • C07C69/716—Esters of keto-carboxylic acids or aldehydo-carboxylic acids

Abstract

Diketodicarboxylic acid esters of the general formula p YOOC.C.(X)(X1).CO.CH2.CO.COOZ are prepared by condensing the methyl or ethyl ester of a disubstituted acetoacetic acid of the formula YOOC.C(X)(X1).CO.CH3 with a dialkyl oxalate of the formula ZOOC-COOZ in the presence of sodium or potassium alcoholate, where X,X1 and Z are identical or different organic hydrocarbon radicals with 1-5 carbon atoms with straight or branched chains, saturated or unsaturated and Y is a methyl or ethyl group. The condensation may be effected at room temperature or preferably at 30 to 40 DEG C. The alcoholate used is preferably derived from the same alcohol as the oxalate. The products are useful as insecticides and repellents.
GB32499/56A 1955-10-27 1956-10-25 Methods of preparing diketodicarboxylic acid esters, and diketodicarboxylic acid esters when prepared by said methods Expired GB842725A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS842725X 1955-10-27

Publications (1)

Publication Number Publication Date
GB842725A true GB842725A (en) 1960-07-27

Family

ID=5456030

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32499/56A Expired GB842725A (en) 1955-10-27 1956-10-25 Methods of preparing diketodicarboxylic acid esters, and diketodicarboxylic acid esters when prepared by said methods

Country Status (2)

Country Link
FR (1) FR1161259A (en)
GB (1) GB842725A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987007265A1 (en) * 1986-05-29 1987-12-03 E.I. Du Pont De Nemours And Company Acylation and sulfonation of silylketene acetals
US4983679A (en) * 1986-05-29 1991-01-08 E. I. Dupont De Nemours And Company β-(keto or sulfonyl)esters from reaction of silylketene acetal and acyl or sulfonyl compound
US5110869A (en) * 1986-05-29 1992-05-05 E. I. Du Pont De Nemours And Company β-(keto or sulfonyl)esters from reaction of silyketene acetal and acyl or sulfonyl compound
US5260424A (en) * 1986-05-29 1993-11-09 E. I. Du Pont De Nemours And Company B-(keto or sulfonyl) esters from reaction of silylketene acetal and acyl or sulfonyl compound
CN111533655A (en) * 2020-05-31 2020-08-14 广东工业大学 Preparation method of long-carbon-chain keto dicarboxylic ester

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987007265A1 (en) * 1986-05-29 1987-12-03 E.I. Du Pont De Nemours And Company Acylation and sulfonation of silylketene acetals
US4983679A (en) * 1986-05-29 1991-01-08 E. I. Dupont De Nemours And Company β-(keto or sulfonyl)esters from reaction of silylketene acetal and acyl or sulfonyl compound
US5110869A (en) * 1986-05-29 1992-05-05 E. I. Du Pont De Nemours And Company β-(keto or sulfonyl)esters from reaction of silyketene acetal and acyl or sulfonyl compound
US5260424A (en) * 1986-05-29 1993-11-09 E. I. Du Pont De Nemours And Company B-(keto or sulfonyl) esters from reaction of silylketene acetal and acyl or sulfonyl compound
CN111533655A (en) * 2020-05-31 2020-08-14 广东工业大学 Preparation method of long-carbon-chain keto dicarboxylic ester
CN111533655B (en) * 2020-05-31 2022-09-02 广东工业大学 Preparation method of long-carbon-chain keto dicarboxylic ester

Also Published As

Publication number Publication date
FR1161259A (en) 1958-08-25

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