JPS56115757A - Preparation of azo compound - Google Patents

Preparation of azo compound

Info

Publication number
JPS56115757A
JPS56115757A JP1800480A JP1800480A JPS56115757A JP S56115757 A JPS56115757 A JP S56115757A JP 1800480 A JP1800480 A JP 1800480A JP 1800480 A JP1800480 A JP 1800480A JP S56115757 A JPS56115757 A JP S56115757A
Authority
JP
Japan
Prior art keywords
expressed
formula
phenol
miscible
alkyl group
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
JP1800480A
Other languages
Japanese (ja)
Other versions
JPS639502B2 (en
Inventor
Takashi Kojima
Keiichi Hatanaka
Mitsuhisa Nakatani
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 JP1800480A priority Critical patent/JPS56115757A/en
Publication of JPS56115757A publication Critical patent/JPS56115757A/en
Publication of JPS639502B2 publication Critical patent/JPS639502B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To obtain the titled compound useful as an intermediate for an ultraviolet light absorber in high yield, by dissolving a 2,4-disubstituted phenol in an aliphatic alcohol, etc. miscible with water, and reacting the phenol with an aqueous solution of a diazonium salt of a specific aniline.
CONSTITUTION: An aniline expressed by formula I (R3 is H, halogen atom, alkyl group or alkoxyl group), e.g. 4-chloro-2-nitroaniline, is suspended in aqueous hydrochloric acid and cooled. Sodium nitrite is then added to the cooled suspension to give a diazonium salt, which is then reacted with a solution of a 2,4-disubstituted phenol expressed by formula II (R1 and R2 are alkyl group), e.g. 4-methyl-2-tert- butylphenol, dissolved in an aliphatic alcohol, e.g. methanol, or an aliphatic carboxylic acid, e.g. acetic acid, miscible with water to afford an azo compound expressed by formula III.
COPYRIGHT: (C)1981,JPO&Japio
JP1800480A 1980-02-15 1980-02-15 Preparation of azo compound Granted JPS56115757A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1800480A JPS56115757A (en) 1980-02-15 1980-02-15 Preparation of azo compound

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1800480A JPS56115757A (en) 1980-02-15 1980-02-15 Preparation of azo compound

Publications (2)

Publication Number Publication Date
JPS56115757A true JPS56115757A (en) 1981-09-11
JPS639502B2 JPS639502B2 (en) 1988-02-29

Family

ID=11959539

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1800480A Granted JPS56115757A (en) 1980-02-15 1980-02-15 Preparation of azo compound

Country Status (1)

Country Link
JP (1) JPS56115757A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0492495U (en) * 1990-12-28 1992-08-12

Also Published As

Publication number Publication date
JPS639502B2 (en) 1988-02-29

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