反应详情

Gaseous ammonia was passed into a solution of 14.3 g of 4-chloro-3-(2-chloro-2-ethoxycarbonylethenyl)-phenyl isocyanate in 200 ml of tetrahydrofuran at 20° C. in the course of 1.5 hours until saturation had been reached, and stirring was carried out for 1 hour. The precipitate was removed and washed with ether. The filtrate was evaporated down, the residue was stirred with ether and the product was removed. The solids were combined.

1. customThe precipitate was removed
2. washwashed with ether
3. customThe filtrate was evaporated down
4. stirringthe residue was stirred with ether
5. customthe product was removed