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JPS57206678A - Stereoisomerization of acid anhydride - Google Patents

Stereoisomerization of acid anhydride

Info

Publication number
JPS57206678A
JPS57206678A JP7619081A JP7619081A JPS57206678A JP S57206678 A JPS57206678 A JP S57206678A JP 7619081 A JP7619081 A JP 7619081A JP 7619081 A JP7619081 A JP 7619081A JP S57206678 A JPS57206678 A JP S57206678A
Authority
JP
Japan
Prior art keywords
cis
stereoisomerization
formula
dialkylamino
trans
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
JP7619081A
Other languages
Japanese (ja)
Other versions
JPS5928556B2 (en
Inventor
Takeshi Nakahara
Toshio Akima
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 Corp
Original Assignee
Hitachi 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 Hitachi Chemical Co Ltd filed Critical Hitachi Chemical Co Ltd
Priority to JP7619081A priority Critical patent/JPS5928556B2/en
Publication of JPS57206678A publication Critical patent/JPS57206678A/en
Publication of JPS5928556B2 publication Critical patent/JPS5928556B2/en
Expired legal-status Critical Current

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Abstract

PURPOSE: To obtain a trans-form of the titled compound liquid at normal temperature useful for sealing electronic parts, etc., by subjecting cis-3-methyl-Δ4- tetrahydrophthalic anhydride, etc. to stereoisomerization in the presence of a dialkylamino-alcohol under heating.
CONSTITUTION: 100pts.wt. cis-3-methyl-D4-tetrahydrophthalic anhydride shown by by the formulaI, cis-4-methylhexahydrophthalic anhydride shown by the formula II, or cis-3-methylhexahydrophthalic anhydride shown by the formula III is isomerized in the presence of usually 0.01W5pts.wt., preferably 0.01W2pts.wt. dialkylamino-alcohol (e.g., N,N"-dimethyl ethanolamine, etc.) shown by the formula V under heating at 80W300°C, preferably 100W180°C into each trans- form of the compound.
COPYRIGHT: (C)1982,JPO&Japio
JP7619081A 1981-05-19 1981-05-19 Acid anhydride stereoisomerization method Expired JPS5928556B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7619081A JPS5928556B2 (en) 1981-05-19 1981-05-19 Acid anhydride stereoisomerization method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7619081A JPS5928556B2 (en) 1981-05-19 1981-05-19 Acid anhydride stereoisomerization method

Publications (2)

Publication Number Publication Date
JPS57206678A true JPS57206678A (en) 1982-12-18
JPS5928556B2 JPS5928556B2 (en) 1984-07-13

Family

ID=13598206

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7619081A Expired JPS5928556B2 (en) 1981-05-19 1981-05-19 Acid anhydride stereoisomerization method

Country Status (1)

Country Link
JP (1) JPS5928556B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003026770A (en) * 2001-07-12 2003-01-29 Hitachi Chem Co Ltd Acid anhydride curing agent and epoxy resin composition
WO2005049597A1 (en) * 2003-11-20 2005-06-02 Mitsubishi Gas Chemical Company, Inc. Liquid cyclohexane-tricarboxycylic acid anhydride
JP2024064934A (en) * 2022-10-28 2024-05-14 南亞塑膠工業股▲分▼有限公司 Manufacturing method of low viscosity curing agent
US12116340B2 (en) 2022-10-28 2024-10-15 Nan Ya Plastics Corporation Method for manufacturing methyltetrahydrophthalic anhydride

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003026770A (en) * 2001-07-12 2003-01-29 Hitachi Chem Co Ltd Acid anhydride curing agent and epoxy resin composition
WO2005049597A1 (en) * 2003-11-20 2005-06-02 Mitsubishi Gas Chemical Company, Inc. Liquid cyclohexane-tricarboxycylic acid anhydride
CN100451012C (en) * 2003-11-20 2009-01-14 三菱瓦斯化学株式会社 Liquid cyclohexane-tricarboxylic acid anhydride
US7569708B2 (en) 2003-11-20 2009-08-04 Mitsubishi Gas Chemical Company, Inc. Liquid cyclohexane-tricarboxylic acid anhydride
JP4826256B2 (en) * 2003-11-20 2011-11-30 三菱瓦斯化学株式会社 Liquid cyclohexanetricarboxylic acid anhydride
KR101132905B1 (en) 2003-11-20 2012-04-03 미츠비시 가스 가가쿠 가부시키가이샤 Liquid cyclohexane-tricarboxylic acid anhydride
JP2024064934A (en) * 2022-10-28 2024-05-14 南亞塑膠工業股▲分▼有限公司 Manufacturing method of low viscosity curing agent
US12116340B2 (en) 2022-10-28 2024-10-15 Nan Ya Plastics Corporation Method for manufacturing methyltetrahydrophthalic anhydride

Also Published As

Publication number Publication date
JPS5928556B2 (en) 1984-07-13

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