JPS5643239A - Preparation of 1,4,4a,9a-tetrahydroanthraquinone compound - Google Patents

Preparation of 1,4,4a,9a-tetrahydroanthraquinone compound

Info

Publication number
JPS5643239A
JPS5643239A JP11738879A JP11738879A JPS5643239A JP S5643239 A JPS5643239 A JP S5643239A JP 11738879 A JP11738879 A JP 11738879A JP 11738879 A JP11738879 A JP 11738879A JP S5643239 A JPS5643239 A JP S5643239A
Authority
JP
Japan
Prior art keywords
reaction
thaq
compound
produced
conjugated diolefin
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
JP11738879A
Other languages
Japanese (ja)
Other versions
JPS6045864B2 (en
Inventor
Tatsumi Komatsu
Kenji Usui
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.)
Kawasaki Kasei Chemicals Ltd
Original Assignee
Kawasaki Kasei Chemicals 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 Kawasaki Kasei Chemicals Ltd filed Critical Kawasaki Kasei Chemicals Ltd
Priority to JP11738879A priority Critical patent/JPS6045864B2/en
Publication of JPS5643239A publication Critical patent/JPS5643239A/en
Publication of JPS6045864B2 publication Critical patent/JPS6045864B2/en
Expired legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PURPOSE: To prepare the titled compound in high quality and yield, with simple process, by the Diels-Alder reaction of 1,4-naphthoquinone with a conjugated diolefin compound using the produced titled compound as a reaction medium.
CONSTITUTION: A liquid or gaseous conjugated diolefin compound is intorduced into a mixture of 1,4-naphthoquinone (NQ) and 1,4,4a,9a-tetrahydroanthraquinone compound (THAQ) maintained at a temperature above the melting point of THAQ, pref. at 110W150°C. After the completion of the reaction, a part of the produced THAQ is extracted from the system, and recycled as the medium of said reaction. The remaining part of the THAQ is utilized as the objective product. Similar effect can be also attained by introducing the conjuagated diolefin compound at the initial stage of the reaction into molten NQ under the reaction conditions, and completing the reaction in the presence of the produced THAQ.
EFFECT: The recovery of the conjugated diolefin compound used in excess is facilitated.
COPYRIGHT: (C)1981,JPO&Japio
JP11738879A 1979-09-14 1979-09-14 Method for producing 1,4,4a,9a-tetrahydroanthraquinone compound Expired JPS6045864B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11738879A JPS6045864B2 (en) 1979-09-14 1979-09-14 Method for producing 1,4,4a,9a-tetrahydroanthraquinone compound

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11738879A JPS6045864B2 (en) 1979-09-14 1979-09-14 Method for producing 1,4,4a,9a-tetrahydroanthraquinone compound

Publications (2)

Publication Number Publication Date
JPS5643239A true JPS5643239A (en) 1981-04-21
JPS6045864B2 JPS6045864B2 (en) 1985-10-12

Family

ID=14710406

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11738879A Expired JPS6045864B2 (en) 1979-09-14 1979-09-14 Method for producing 1,4,4a,9a-tetrahydroanthraquinone compound

Country Status (1)

Country Link
JP (1) JPS6045864B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62185869U (en) * 1986-05-19 1987-11-26
JPS6421222U (en) * 1987-07-28 1989-02-02
JPH0286950A (en) * 1988-09-20 1990-03-27 Mazda Motor Corp Intake air system for engine

Also Published As

Publication number Publication date
JPS6045864B2 (en) 1985-10-12

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