JPS5515431A - Preparation of 3,4,5,6-tetrahydrophthalic anhydride - Google Patents

Preparation of 3,4,5,6-tetrahydrophthalic anhydride

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Publication number
JPS5515431A
JPS5515431A JP8750778A JP8750778A JPS5515431A JP S5515431 A JPS5515431 A JP S5515431A JP 8750778 A JP8750778 A JP 8750778A JP 8750778 A JP8750778 A JP 8750778A JP S5515431 A JPS5515431 A JP S5515431A
Authority
JP
Japan
Prior art keywords
tetrahydrophthalic anhydride
preparation
sulfur
catalyst
compound
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.)
Granted
Application number
JP8750778A
Other languages
Japanese (ja)
Other versions
JPS5854148B2 (en
Inventor
Shoji Tani
Kenji Nishio
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.)
New Japan Chemical Co Ltd
Original Assignee
New Japan Chemical Co 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 New Japan Chemical Co Ltd filed Critical New Japan Chemical Co Ltd
Priority to JP8750778A priority Critical patent/JPS5854148B2/en
Publication of JPS5515431A publication Critical patent/JPS5515431A/en
Publication of JPS5854148B2 publication Critical patent/JPS5854148B2/en
Expired legal-status Critical Current

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Abstract

PURPOSE: To obtain the title substance useful as a raw material for pesticides in high yield without forming by-products, by isomerizing 1,2,3,6-tetrahydrophthalic anhydride in the presence of a catalyst and a small amount of sulfur (or its compound) in the reaction system.
CONSTITUTION: 1,2,3,6-Tetrahydrophthalic anhydride (T) is isomerized in the presence of a palladium catalyst comprising 0.1W10%, preferably 1W5% of palladium supported on a carrier, e.g. carbon or alumina, and 1W200ppm of sulfur (S) or its compound calculated as S based on (T).
COPYRIGHT: (C)1980,JPO&Japio
JP8750778A 1978-07-17 1978-07-17 Method for producing 3,4,5,6-tetrahydrophthalic anhydride Expired JPS5854148B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8750778A JPS5854148B2 (en) 1978-07-17 1978-07-17 Method for producing 3,4,5,6-tetrahydrophthalic anhydride

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8750778A JPS5854148B2 (en) 1978-07-17 1978-07-17 Method for producing 3,4,5,6-tetrahydrophthalic anhydride

Publications (2)

Publication Number Publication Date
JPS5515431A true JPS5515431A (en) 1980-02-02
JPS5854148B2 JPS5854148B2 (en) 1983-12-02

Family

ID=13916884

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8750778A Expired JPS5854148B2 (en) 1978-07-17 1978-07-17 Method for producing 3,4,5,6-tetrahydrophthalic anhydride

Country Status (1)

Country Link
JP (1) JPS5854148B2 (en)

Also Published As

Publication number Publication date
JPS5854148B2 (en) 1983-12-02

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