JPS5640679A - Preparation of bisbenzofuranone derivative - Google Patents

Preparation of bisbenzofuranone derivative

Info

Publication number
JPS5640679A
JPS5640679A JP11612079A JP11612079A JPS5640679A JP S5640679 A JPS5640679 A JP S5640679A JP 11612079 A JP11612079 A JP 11612079A JP 11612079 A JP11612079 A JP 11612079A JP S5640679 A JPS5640679 A JP S5640679A
Authority
JP
Japan
Prior art keywords
pref
formula
substituent
halogen
lower alkyl
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
JP11612079A
Other languages
Japanese (ja)
Inventor
Yoshio Imai
Mitsuru Ueda
Takeyoshi Takahashi
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.)
Dainichiseika Color and Chemicals Mfg Co Ltd
Original Assignee
Dainichiseika Color and Chemicals Mfg 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 Dainichiseika Color and Chemicals Mfg Co Ltd filed Critical Dainichiseika Color and Chemicals Mfg Co Ltd
Priority to JP11612079A priority Critical patent/JPS5640679A/en
Publication of JPS5640679A publication Critical patent/JPS5640679A/en
Pending legal-status Critical Current

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  • Furan Compounds (AREA)

Abstract

NEW MATERIAL:A bisbenzofuranone derivative of formula I [X is direct bond or a bivalent substituent (e.g. CO, O, etc.); ring A is aromatic ring which may have substituent (e.g. lower alkyl, halogen, etc.)].
EXAMPLE: 5,5'-Carbonylbis(3-benzylidene-3H-benzofuran-2-one.
USE: An intermediate of various synthetic organic chemicals. Especially a monomer which is to be condensed with a diamine to obtain a heat-resistant polyimide resin having excellent solubility in various solvents.
PROCESS: The compound of formula I is prepared by reacting a compound of formula II (pref. X is direct bond, CO or O) with an excess amount of phenylacetic acid which may have a substituent group (e.g. lower alkyl, halogen, etc.) at the aromatic ring, or its ester (pref. phenylacetic acid) pref. in the presence of a catalyst such as sodium acetate.
COPYRIGHT: (C)1981,JPO&Japio
JP11612079A 1979-09-12 1979-09-12 Preparation of bisbenzofuranone derivative Pending JPS5640679A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11612079A JPS5640679A (en) 1979-09-12 1979-09-12 Preparation of bisbenzofuranone derivative

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11612079A JPS5640679A (en) 1979-09-12 1979-09-12 Preparation of bisbenzofuranone derivative

Publications (1)

Publication Number Publication Date
JPS5640679A true JPS5640679A (en) 1981-04-16

Family

ID=14679182

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11612079A Pending JPS5640679A (en) 1979-09-12 1979-09-12 Preparation of bisbenzofuranone derivative

Country Status (1)

Country Link
JP (1) JPS5640679A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58119983U (en) * 1982-02-04 1983-08-16 臼井国際産業株式会社 "Kiln" fixing structure between the end of the small diameter metal steel pipe and the connecting end fitting

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS=1970 *
CHEMICAL ABSTRACTS=1975 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58119983U (en) * 1982-02-04 1983-08-16 臼井国際産業株式会社 "Kiln" fixing structure between the end of the small diameter metal steel pipe and the connecting end fitting

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