JPS567752A - Preparation of 2- sulfophenylhydrazino -butane diacid derivative - Google Patents
Preparation of 2- sulfophenylhydrazino -butane diacid derivativeInfo
- Publication number
- JPS567752A JPS567752A JP8242879A JP8242879A JPS567752A JP S567752 A JPS567752 A JP S567752A JP 8242879 A JP8242879 A JP 8242879A JP 8242879 A JP8242879 A JP 8242879A JP S567752 A JPS567752 A JP S567752A
- Authority
- JP
- Japan
- Prior art keywords
- sulfophenylhydrazino
- preparation
- phenylhydrazinesulfonic
- formula
- diacid derivative
- 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
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To prepare the titled compound useful as an intermediate for pigments, pharmaceuticals, pesticides, etc., by reacting a specific phenylhydrazinesulfonic acid derivative with maleic acid (anhydride).
CONSTITUTION: (A) A phenylhydrazinesulfonic acid derivative of formula I (R is H, halogen or 1W3C lower alkyl; A is H or alkali metal; m and n are 1 or 2) and sodium hydroxide are dissolved in water, and an aqueous solution of (B) maleic acid and/or maleic anhydride is added thereto. The reaction is carried out at ≤100°, preferably at 60W80°C at pH3W8.5, preferably 4W7 to give the desired compound of formula II. The molar ratio of (B) to (A) is 0.8W1.5, preferably 1.0W1.2.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8242879A JPS567752A (en) | 1979-06-29 | 1979-06-29 | Preparation of 2- sulfophenylhydrazino -butane diacid derivative |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8242879A JPS567752A (en) | 1979-06-29 | 1979-06-29 | Preparation of 2- sulfophenylhydrazino -butane diacid derivative |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS567752A true JPS567752A (en) | 1981-01-27 |
JPS6219426B2 JPS6219426B2 (en) | 1987-04-28 |
Family
ID=13774301
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8242879A Granted JPS567752A (en) | 1979-06-29 | 1979-06-29 | Preparation of 2- sulfophenylhydrazino -butane diacid derivative |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS567752A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04265182A (en) * | 1991-02-21 | 1992-09-21 | Toshiba Corp | Mail processor |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01174683U (en) * | 1988-05-31 | 1989-12-12 |
-
1979
- 1979-06-29 JP JP8242879A patent/JPS567752A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04265182A (en) * | 1991-02-21 | 1992-09-21 | Toshiba Corp | Mail processor |
Also Published As
Publication number | Publication date |
---|---|
JPS6219426B2 (en) | 1987-04-28 |
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