HRID1287712
反应详情
EQUATION
反应方程式
REACTANTS
反应物
PRODUCTS
生成物
AUXILIARIES
试剂、催化剂与溶剂
PROCEDURE
实验过程
A mixture of 4-chloro-5-dimethylsulphamyl-3-nitro-benzoic acid (3.08 g), a phenol (2g), sodium hydrogen carbonate (3.4 g), and water (20 ml) was heated at 90° C for 8 hours. Then water (40 ml) was added and, after cooling, the 5-dimethylsulphamyl-3-nitro-4-phenoxy-benzoic acid was precipitated by acidification with 4N hydrochloric acid. After isolation by filtration and several recrystallizations from ethanol, the said compound was obtained with a melting point of 224°-226° C.
WORKUP
后处理
- temperatureafter cooling
- customthe 5-dimethylsulphamyl-3-nitro-4-phenoxy-benzoic acid was precipitated by acidification with 4N hydrochloric acid
- filtrationAfter isolation by filtration and several recrystallizations from ethanol
- customthe said compound was obtained with a melting point of 224°-226° C.