反应详情

A mixture of 4,4'-methylene dianiline (198 g; 1 mole), acetophenone (240 g; 2 moles) and a catalytic amount of stannous chloride was refluxed in toluene (3L) for 30 hours using a Dean-Stark trap. The theoretical amount of water was removed from the system. The toluene was then removed under vacuum.

1. customThe theoretical amount of water was removed from the system
2. customThe toluene was then removed under vacuum