JPS55142053A - Preparation of dianthraquinone-n,n'-dihydroazine - Google Patents

Preparation of dianthraquinone-n,n'-dihydroazine

Info

Publication number
JPS55142053A
JPS55142053A JP4913979A JP4913979A JPS55142053A JP S55142053 A JPS55142053 A JP S55142053A JP 4913979 A JP4913979 A JP 4913979A JP 4913979 A JP4913979 A JP 4913979A JP S55142053 A JPS55142053 A JP S55142053A
Authority
JP
Japan
Prior art keywords
reaction
agent
aminoanthraquinone
dmso
fed
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
JP4913979A
Other languages
Japanese (ja)
Other versions
JPS6256186B2 (en
Inventor
Yasuyoshi Torisu
Akio Iwamura
Kenji Abe
Seishichirou Momiji
Toru Yoshizato
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.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
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 Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Priority to JP4913979A priority Critical patent/JPS55142053A/en
Publication of JPS55142053A publication Critical patent/JPS55142053A/en
Publication of JPS6256186B2 publication Critical patent/JPS6256186B2/ja
Granted legal-status Critical Current

Links

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

Abstract

PURPOSE: To milden the initial reaction, and to obtain the title compound with suppressed by-products, by feeding aminoanthraquinone with an alkaline condensation agent in portions to a reaction system comprising dimethyl sulfoxide and an oxidizing agent.
CONSTITUTION: One or more materials of 1-aminoanthraquinone (A) and an alkaline condensation agent (C) are fed to a reaction system comprising dimethyl sulfoxide (DMSO) and an oxidizing agent (B) in portions, and/or the amount of water present in the system is adjusted to give the objective compound. For example, DMSO, A, and 0W50% alkaline condensing agent, e.g. KOH of the total amt. of (C), are fed to a reactor, and the remaining C is slowly added to drive the reaction in the presence of (B), e.g. air, at 80W140°C. Water is distilled off, if necessary, to complete the reaction.
COPYRIGHT: (C)1980,JPO&Japio
JP4913979A 1979-04-23 1979-04-23 Preparation of dianthraquinone-n,n'-dihydroazine Granted JPS55142053A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4913979A JPS55142053A (en) 1979-04-23 1979-04-23 Preparation of dianthraquinone-n,n'-dihydroazine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4913979A JPS55142053A (en) 1979-04-23 1979-04-23 Preparation of dianthraquinone-n,n'-dihydroazine

Publications (2)

Publication Number Publication Date
JPS55142053A true JPS55142053A (en) 1980-11-06
JPS6256186B2 JPS6256186B2 (en) 1987-11-24

Family

ID=12822735

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4913979A Granted JPS55142053A (en) 1979-04-23 1979-04-23 Preparation of dianthraquinone-n,n'-dihydroazine

Country Status (1)

Country Link
JP (1) JPS55142053A (en)

Also Published As

Publication number Publication date
JPS6256186B2 (en) 1987-11-24

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