JPS55129249A - Preparation of 1-amino-2-bromo-4-hydroxyanthraquinone - Google Patents

Preparation of 1-amino-2-bromo-4-hydroxyanthraquinone

Info

Publication number
JPS55129249A
JPS55129249A JP3754879A JP3754879A JPS55129249A JP S55129249 A JPS55129249 A JP S55129249A JP 3754879 A JP3754879 A JP 3754879A JP 3754879 A JP3754879 A JP 3754879A JP S55129249 A JPS55129249 A JP S55129249A
Authority
JP
Japan
Prior art keywords
amino
sulfuric acid
hydroxyanthraquinone
bromo
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.)
Pending
Application number
JP3754879A
Other languages
Japanese (ja)
Inventor
Takashi Akamatsu
Yukio Kuwabara
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 JP3754879A priority Critical patent/JPS55129249A/en
Publication of JPS55129249A publication Critical patent/JPS55129249A/en
Pending legal-status Critical Current

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

Abstract

PURPOSE: To obtain the title compound, useful as an intermediate for the synthesis of compounds for disperse dyes, easily, by heating a specific compound obtained by monobromination (not by dibromination) of 1-aminoanthraquinone, in concentrated sulfuric acid in the presence of boric acid.
CONSTITUTION: 1-Amino-2-bromoanthraquinone is heated at 140W180°C in concentrated sulfuric acid or fuming sulfuric acid, preferably 90% concentrated sulfuric acid or 3% fuming sulfuric acid (esp. 94W100% sulfuric acid is used in an amount of 4W25wt part, preferably 5W10 weight part, based on 1 part of 1-amino-2-bromanthraquinone), in the presence of boric acid to give 1-amino-2-bromo-4-hydroxyanthraquinone. The starting material, 1-amino-20-bromoanthraquinone, is obtained by treating 1-aminoanthraquinone with 1mol of bromine in glacial acetic acid, and heating the product.
COPYRIGHT: (C)1980,JPO&Japio
JP3754879A 1979-03-28 1979-03-28 Preparation of 1-amino-2-bromo-4-hydroxyanthraquinone Pending JPS55129249A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3754879A JPS55129249A (en) 1979-03-28 1979-03-28 Preparation of 1-amino-2-bromo-4-hydroxyanthraquinone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3754879A JPS55129249A (en) 1979-03-28 1979-03-28 Preparation of 1-amino-2-bromo-4-hydroxyanthraquinone

Publications (1)

Publication Number Publication Date
JPS55129249A true JPS55129249A (en) 1980-10-06

Family

ID=12500569

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3754879A Pending JPS55129249A (en) 1979-03-28 1979-03-28 Preparation of 1-amino-2-bromo-4-hydroxyanthraquinone

Country Status (1)

Country Link
JP (1) JPS55129249A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2817890A1 (en) * 1977-04-25 1978-10-26 Sumitomo Chemical Co PROCESS FOR THE PREPARATION OF 1-AMINO-2-BROMO-4-HYDROXY-ANTHRACHINONE
EP0160162A1 (en) * 1984-04-28 1985-11-06 Bayer Ag Process for preparing 1-amino-2-bromo-4-hydroxy-anthraquinone

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2817890A1 (en) * 1977-04-25 1978-10-26 Sumitomo Chemical Co PROCESS FOR THE PREPARATION OF 1-AMINO-2-BROMO-4-HYDROXY-ANTHRACHINONE
EP0160162A1 (en) * 1984-04-28 1985-11-06 Bayer Ag Process for preparing 1-amino-2-bromo-4-hydroxy-anthraquinone

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