JPS56166156A - Preparation of anthraquinone intermediate - Google Patents

Preparation of anthraquinone intermediate

Info

Publication number
JPS56166156A
JPS56166156A JP7045580A JP7045580A JPS56166156A JP S56166156 A JPS56166156 A JP S56166156A JP 7045580 A JP7045580 A JP 7045580A JP 7045580 A JP7045580 A JP 7045580A JP S56166156 A JPS56166156 A JP S56166156A
Authority
JP
Japan
Prior art keywords
acid
amino
raw material
dibromoanthraquinone
boric acid
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
JP7045580A
Other languages
Japanese (ja)
Other versions
JPS6045870B2 (en
Inventor
Akira Takeshita
Masao Nishikuri
Makoto Hattori
Hiroto Kenmochi
Yoji Toda
Shinichi Tanji
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.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo 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 Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Priority to JP7045580A priority Critical patent/JPS6045870B2/en
Publication of JPS56166156A publication Critical patent/JPS56166156A/en
Publication of JPS6045870B2 publication Critical patent/JPS6045870B2/en
Expired legal-status Critical Current

Links

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

Abstract

PURPOSE: To obtain an anthraquinone derivative useful as a raw material for a dye in high purity and yield, by hydrolyzing 1-amino-2,4-dibromoanthraquinone in concentrated or fuming sulfuric acid in the presence of boric acid and a specific carboxylic acid.
CONSTITUTION: 1-Amino-2,4-dibromoanthraquinone is hydrolyzed in concentrated or fuming sulfuric acid in the presence of boric acid and an aliphatic dicarboxylic acid or aromatic mono- or dicarboxylic acid to give 1-amino-2-bromo-4-hydroxyanthraquinone. The molar amount of the carboxylic acid is 0.05W1.5mol based on the raw material compound, and that of the boric acid is about 1W3mol. The reaction temperature is preferably 100W140°C, and the resultant compound used as the raw material for a red disperse dye provides a dyed article having more improved brightness than that obtained by the conventional method.
COPYRIGHT: (C)1981,JPO&Japio
JP7045580A 1980-05-26 1980-05-26 Method for producing anthraquinone intermediates Expired JPS6045870B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7045580A JPS6045870B2 (en) 1980-05-26 1980-05-26 Method for producing anthraquinone intermediates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7045580A JPS6045870B2 (en) 1980-05-26 1980-05-26 Method for producing anthraquinone intermediates

Publications (2)

Publication Number Publication Date
JPS56166156A true JPS56166156A (en) 1981-12-21
JPS6045870B2 JPS6045870B2 (en) 1985-10-12

Family

ID=13431993

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7045580A Expired JPS6045870B2 (en) 1980-05-26 1980-05-26 Method for producing anthraquinone intermediates

Country Status (1)

Country Link
JP (1) JPS6045870B2 (en)

Also Published As

Publication number Publication date
JPS6045870B2 (en) 1985-10-12

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