JPS5594348A - Preparation of azo compound - Google Patents
Preparation of azo compoundInfo
- Publication number
- JPS5594348A JPS5594348A JP18479A JP18479A JPS5594348A JP S5594348 A JPS5594348 A JP S5594348A JP 18479 A JP18479 A JP 18479A JP 18479 A JP18479 A JP 18479A JP S5594348 A JPS5594348 A JP S5594348A
- Authority
- JP
- Japan
- Prior art keywords
- formula
- compound
- water
- oil
- azo compound
- 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
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To obtain an azo compound, an intermediate for ultraviolet light absorbers, in high yield, by reacting a 2,4-dialkylphenol with an o-nitroaniline diazo compound in an oil-in-water type dispersion, using a specific surfactant.
CONSTITUTION: A 2,4-dialkylphenol of formula I (R1 and R2 are 1W8C alkyl groups) is dissolved in a water-immiscible organic solvent and emulsified with Turkey red oil and water to give an emulsion, which is then reacted with a diazo compound of an aqueous solution of an o-nitroaniline of formula II (R3 is H or halogen) in the presence of an anionic or nonionic surfactant, e.g. polyoxyethylene- alkyl phenyl ether sulfate, in an oil-in-water type dispersion to form an azo compound (C) of formula III. Ultraviolet light absorbers of formula IV can be obtained from the resulting compound (C).
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18479A JPS5594348A (en) | 1979-01-08 | 1979-01-08 | Preparation of azo compound |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18479A JPS5594348A (en) | 1979-01-08 | 1979-01-08 | Preparation of azo compound |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5594348A true JPS5594348A (en) | 1980-07-17 |
Family
ID=11466902
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18479A Pending JPS5594348A (en) | 1979-01-08 | 1979-01-08 | Preparation of azo compound |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5594348A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1983003254A1 (en) * | 1982-03-11 | 1983-09-29 | Arthur Babson | Stabilization of diazonium salt solutions |
US4847367A (en) * | 1985-09-03 | 1989-07-11 | Ciba-Geigy Corporation | 4-higher alkyl-2-nitro-2'-hydroxy-3',5'-di-higher alkyl (or cumyl)-azobenzenes |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5337628A (en) * | 1976-09-20 | 1978-04-06 | Nippon Kayaku Co Ltd | Preparation of azo compounds |
-
1979
- 1979-01-08 JP JP18479A patent/JPS5594348A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5337628A (en) * | 1976-09-20 | 1978-04-06 | Nippon Kayaku Co Ltd | Preparation of azo compounds |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1983003254A1 (en) * | 1982-03-11 | 1983-09-29 | Arthur Babson | Stabilization of diazonium salt solutions |
US4847367A (en) * | 1985-09-03 | 1989-07-11 | Ciba-Geigy Corporation | 4-higher alkyl-2-nitro-2'-hydroxy-3',5'-di-higher alkyl (or cumyl)-azobenzenes |
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