JPS56115757A - Preparation of azo compound - Google Patents
Preparation of azo compoundInfo
- 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
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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0492495U (en) * | 1990-12-28 | 1992-08-12 |
-
1980
- 1980-02-15 JP JP1800480A patent/JPS56115757A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS639502B2 (en) | 1988-02-29 |
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