HRID1287724

反应详情

EQUATION

反应方程式

HRID 1287724 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

PROCEDURE

实验过程

A mixture of 4-chloro-3-nitro-5-sulphamyl-benzoic acid (28 g), m-toluidine (32.2 g), and water (500 ml) was refluxed for 3 hours. After cooling and acidification with 2N hydrochloric acid, the precipitated 3-nitro-5-sulphamyl-4-(m-toluidino)-benzoic acid was collected by suction, washed with water, and recrystallized from isopropanol. After drying at 115° C in vacuo, the melting point was 256°-259° C.

WORKUP

后处理

  1. temperaturewas refluxed for 3 hours
  2. temperatureAfter cooling
  3. customacidification with 2N hydrochloric acid, the precipitated 3-nitro-5-sulphamyl-4-(m-toluidino)-benzoic acid was collected by suction
  4. washwashed with water
  5. customrecrystallized from isopropanol
  6. customAfter drying at 115° C in vacuo