JPS56147749A - Preparation of succinosuccinic acid dialkyl ester - Google Patents

Preparation of succinosuccinic acid dialkyl ester

Info

Publication number
JPS56147749A
JPS56147749A JP5035380A JP5035380A JPS56147749A JP S56147749 A JPS56147749 A JP S56147749A JP 5035380 A JP5035380 A JP 5035380A JP 5035380 A JP5035380 A JP 5035380A JP S56147749 A JPS56147749 A JP S56147749A
Authority
JP
Japan
Prior art keywords
dialkyl ester
acid dialkyl
alkali metal
metal alcoholate
ester
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
JP5035380A
Other languages
Japanese (ja)
Inventor
Yoshio Umemura
Tadao Horibe
Kasaku Ikeda
Kunitoshi Koga
Terumi Hisayuki
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.)
Ube Corp
Original Assignee
Ube Industries Ltd
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 Ube Industries Ltd filed Critical Ube Industries Ltd
Priority to JP5035380A priority Critical patent/JPS56147749A/en
Publication of JPS56147749A publication Critical patent/JPS56147749A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain the titled compound useful as a raw material for quinacridone pigment in high yield in high selectivity, by condensing a succinic acid dialkyl ester in a specific mixed solvent in the presence of an alkali metal alcoholate, followed by neutralization.
CONSTITUTION: A succinic acid dialkyl ester (e.g., dimethyl succinate, etc.) is condensed in a mixed solvent of an aromatic hydrocarbon (e.g., benzene, etc.) or aliphatic hydrocarbon (e.g., hexane, etc. ) and N-methyl-ε-caprolactam in the presence of an alkali metal alcoholate at 70W150°C. The reaction product is neutralized with an inorganic acid, e.g. sulfuric acid, etc., to give succinosuccinic acid dialkyl ester (cyclohexa-1,4-diene-2,5-diol-1,4-dicarboxylic acid dialkyl ester). The amount of the alkali metal alcoholate used is 0.8W2mol based on 1mol of the raw material ester.
COPYRIGHT: (C)1981,JPO&Japio
JP5035380A 1980-04-18 1980-04-18 Preparation of succinosuccinic acid dialkyl ester Pending JPS56147749A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5035380A JPS56147749A (en) 1980-04-18 1980-04-18 Preparation of succinosuccinic acid dialkyl ester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5035380A JPS56147749A (en) 1980-04-18 1980-04-18 Preparation of succinosuccinic acid dialkyl ester

Publications (1)

Publication Number Publication Date
JPS56147749A true JPS56147749A (en) 1981-11-16

Family

ID=12856534

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5035380A Pending JPS56147749A (en) 1980-04-18 1980-04-18 Preparation of succinosuccinic acid dialkyl ester

Country Status (1)

Country Link
JP (1) JPS56147749A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5885843A (en) * 1981-11-17 1983-05-23 Mitsui Toatsu Chem Inc Preparation of succinylsuccinic diester
JPH0448369U (en) * 1990-08-31 1992-04-24
JPH04129282U (en) * 1991-02-06 1992-11-25 シロキ工業株式会社 door lock device
WO1994010249A1 (en) * 1992-11-04 1994-05-11 Zeneca Limited Pigment manufacturing process

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5885843A (en) * 1981-11-17 1983-05-23 Mitsui Toatsu Chem Inc Preparation of succinylsuccinic diester
JPH0118064B2 (en) * 1981-11-17 1989-04-03 Mitsui Toatsu Chemicals
JPH0448369U (en) * 1990-08-31 1992-04-24
JPH04129282U (en) * 1991-02-06 1992-11-25 シロキ工業株式会社 door lock device
WO1994010249A1 (en) * 1992-11-04 1994-05-11 Zeneca Limited Pigment manufacturing process

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