JPS52134630A - Preparation of 6,13-dihydroquinacridone - Google Patents

Preparation of 6,13-dihydroquinacridone

Info

Publication number
JPS52134630A
JPS52134630A JP5105476A JP5105476A JPS52134630A JP S52134630 A JPS52134630 A JP S52134630A JP 5105476 A JP5105476 A JP 5105476A JP 5105476 A JP5105476 A JP 5105476A JP S52134630 A JPS52134630 A JP S52134630A
Authority
JP
Japan
Prior art keywords
dihydroquinacridone
preparation
dihydroterephthalates
diphenylamino
dialkyl
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
JP5105476A
Other languages
Japanese (ja)
Inventor
Hiroaki Munakata
Masami Kagizaki
Tsunetoshi Sakamoto
Masaharu Kaneko
Tomio Yoneyama
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.)
Mitsubishi Kasei Corp
Original Assignee
Mitsubishi Kasei Corp
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 Mitsubishi Kasei Corp filed Critical Mitsubishi Kasei Corp
Priority to JP5105476A priority Critical patent/JPS52134630A/en
Publication of JPS52134630A publication Critical patent/JPS52134630A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To prepare 6, 13-dihydroquinacridone in high yields by the ring closure of dialkyl 2,5-diphenylamino-3,6-dihydroterephthalates in inert high-boiling solvents.
COPYRIGHT: (C)1977,JPO&Japio
JP5105476A 1976-05-04 1976-05-04 Preparation of 6,13-dihydroquinacridone Pending JPS52134630A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5105476A JPS52134630A (en) 1976-05-04 1976-05-04 Preparation of 6,13-dihydroquinacridone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5105476A JPS52134630A (en) 1976-05-04 1976-05-04 Preparation of 6,13-dihydroquinacridone

Publications (1)

Publication Number Publication Date
JPS52134630A true JPS52134630A (en) 1977-11-11

Family

ID=12876080

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5105476A Pending JPS52134630A (en) 1976-05-04 1976-05-04 Preparation of 6,13-dihydroquinacridone

Country Status (1)

Country Link
JP (1) JPS52134630A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5757749A (en) * 1980-09-26 1982-04-07 Toyo Soda Mfg Co Ltd Preparation of dihydroquinacridones
JPH01143870A (en) * 1987-10-27 1989-06-06 Basf Ag Production of dihydroquinacridone, quinacridone and quinacridone quinone
US5610306A (en) * 1993-11-19 1997-03-11 Toyo Ink Manufacturing Co., Ltd. Process for the production of 6,13-dihydroquinacridones and apparatus for use for the production
US5659036A (en) * 1993-06-30 1997-08-19 Toyo Ink Manufacturing Co., Ltd. Process for the production of 2,5-di(arylamino)-3,6-dihydroterephthalic acid dialkyl ester, and process for the production of quinacridone from said ester as intermediate

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2844485A (en) * 1955-07-22 1958-07-22 Du Pont Organic pigments
GB828053A (en) * 1956-01-04 1960-02-10 Du Pont Symmetrical tetrahalo substituted quinacridones and process of preparing same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2844485A (en) * 1955-07-22 1958-07-22 Du Pont Organic pigments
GB828053A (en) * 1956-01-04 1960-02-10 Du Pont Symmetrical tetrahalo substituted quinacridones and process of preparing same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5757749A (en) * 1980-09-26 1982-04-07 Toyo Soda Mfg Co Ltd Preparation of dihydroquinacridones
JPH01143870A (en) * 1987-10-27 1989-06-06 Basf Ag Production of dihydroquinacridone, quinacridone and quinacridone quinone
US5659036A (en) * 1993-06-30 1997-08-19 Toyo Ink Manufacturing Co., Ltd. Process for the production of 2,5-di(arylamino)-3,6-dihydroterephthalic acid dialkyl ester, and process for the production of quinacridone from said ester as intermediate
US5817817A (en) * 1993-06-30 1998-10-06 Toyo Ink Manufacturing Co., Ltd. Process for the production of 2,5-di(arylamino)-3,6-dihydroterephthalic acid dialkyl ester, and process for the production of quinacridone from said ester as intermediate
US5610306A (en) * 1993-11-19 1997-03-11 Toyo Ink Manufacturing Co., Ltd. Process for the production of 6,13-dihydroquinacridones and apparatus for use for the production

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