Reaktion #3231

Reaktionsgleichung

4-methyl-2-nitroaniline

chlorine

→

title compound

Ausbeute 25.0%

2-Chloro-4-methyl-6-nitroaniline

Ausbeute 25.0%

Lösungsmittel

chloroform

chloroform

Reaktionsbedingungen

Aufarbeitung

1. 1
   Temperaturwhile maintaining the reaction mixture temperature below 30° C
2. 2
   Waschenwashed with aqueous sodium bicarbonate
3. 3
   EinengenThe organic phase was then concentrated
4. 4
   Sonstigethe residue chromatographed (eluant: hexane/diethyl ether; 9/1) over silica gel

Vorschrift

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).

Quelle