反应详情

34.5 g (0.15 mol) of 2-amino-4-chloro-N-cyclohexylaniline were refluxed in 500 ml of diethyl oxalate for 4 h. After cooling, the precipitate was filtered off with suction, washed with n-pentane and dried to yield 26.8 g (63%) of the product. Melting point 265°-266° C.

1. temperatureAfter cooling
2. filtrationthe precipitate was filtered off with suction
3. washwashed with n-pentane
4. customdried