JPS5515404A - Preparation of 4-alkoxycarbonyl-3, 5-dimethylphthalic anhydride - Google Patents

Preparation of 4-alkoxycarbonyl-3, 5-dimethylphthalic anhydride

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Publication number
JPS5515404A
JPS5515404A JP8671878A JP8671878A JPS5515404A JP S5515404 A JPS5515404 A JP S5515404A JP 8671878 A JP8671878 A JP 8671878A JP 8671878 A JP8671878 A JP 8671878A JP S5515404 A JPS5515404 A JP S5515404A
Authority
JP
Japan
Prior art keywords
alkoxycarbonyl
solvent
preparation
heating
methoxycarbonyl
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.)
Pending
Application number
JP8671878A
Other languages
Japanese (ja)
Inventor
Toshiyuki Aizawa
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.)
Resonac Holdings Corp
Original Assignee
Showa Denko KK
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 Showa Denko KK filed Critical Showa Denko KK
Priority to JP8671878A priority Critical patent/JPS5515404A/en
Publication of JPS5515404A publication Critical patent/JPS5515404A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To obtain the title compound, an intermediate of antiarteriosclerotics and antithrombotics, from 4-alkoxycarbonyl-6-methoxycarbonyl-3, 5-dimethylbenzoic acid, easily in an industrial scale, by heating above a specific temp.
CONSTITUTION: The title compound is obtained from 4-alkoxycarbonyl-6-methoxycarbonyl-3, 5-dimethylbenzoic acid of the formula (R=lower alkyl). The reaction is carried out by heating without a solvent or by heating in an inert organic solvent having a b.p.of≥80°C above the b.p. of the solvent. Heptane, toluene etc. are used as the solvent.
COPYRIGHT: (C)1980,JPO&Japio
JP8671878A 1978-07-18 1978-07-18 Preparation of 4-alkoxycarbonyl-3, 5-dimethylphthalic anhydride Pending JPS5515404A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8671878A JPS5515404A (en) 1978-07-18 1978-07-18 Preparation of 4-alkoxycarbonyl-3, 5-dimethylphthalic anhydride

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8671878A JPS5515404A (en) 1978-07-18 1978-07-18 Preparation of 4-alkoxycarbonyl-3, 5-dimethylphthalic anhydride

Publications (1)

Publication Number Publication Date
JPS5515404A true JPS5515404A (en) 1980-02-02

Family

ID=13894655

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8671878A Pending JPS5515404A (en) 1978-07-18 1978-07-18 Preparation of 4-alkoxycarbonyl-3, 5-dimethylphthalic anhydride

Country Status (1)

Country Link
JP (1) JPS5515404A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3261846A (en) * 1961-06-30 1966-07-19 Standard Oil Co Recovery of trimellitic acid product
JPS4914215A (en) * 1972-05-24 1974-02-07

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3261846A (en) * 1961-06-30 1966-07-19 Standard Oil Co Recovery of trimellitic acid product
JPS4914215A (en) * 1972-05-24 1974-02-07

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