反応 #3231

反応方程式

4-methyl-2-nitroaniline

chlorine

→

title compound

収率 25.0%

2-Chloro-4-methyl-6-nitroaniline

収率 25.0%

溶媒

chloroform

chloroform

反応条件

後処理

1. 1
   温度while maintaining the reaction mixture temperature below 30° C
2. 2
   洗浄washed with aqueous sodium bicarbonate
3. 3
   濃縮The organic phase was then concentrated
4. 4
   その他the residue chromatographed (eluant: hexane/diethyl ether; 9/1) over silica gel

実験手順

To a stirred solution of 4-methyl-2-nitroaniline (19.69 g, 129.4 mM) in chloroform (200 mL) under a nitrogen atmosphere was added dropwise a solution of chlorine (10.15 g, 285.9 mM) in chloroform (100 mL) while maintaining the reaction mixture temperature below 30° C. The reaction mixture was stirred for 3 days and then washed with aqueous sodium bicarbonate. The organic phase was then concentrated and the residue chromatographed (eluant: hexane/diethyl ether; 9/1) over silica gel to provide (6.03 g, 25%) the title compound as an orange crystalline solid, mp 68.5°-69.5° C.; MS(CI): 187 (M+H).

出典