反应详情

A mixture of 50.0 g of p-chloropropiophenone and 200 ml of N,N-dimethylformamide dimethyl acetal was stirred and heated at reflux for 28 hours. The reaction mixture was evaporated in vacuo to give a yellow oil. The oil was then subjected to Kugelrohr distillation. The residual oil from the distillation was collected and triturated with hexane to provide crystals. The solid was collected by filtration and gave 21.5 g of 4'-chloro-3-dimethylamino-2-methylacrylophenone as yellow crystals, mp 45°-47° C.

1. temperatureheated
2. temperatureat reflux for 28 hours
3. customThe reaction mixture was evaporated in vacuo
4. customto give a yellow oil
5. distillationThe oil was then subjected to Kugelrohr distillation
6. distillationThe residual oil from the distillation
7. customwas collected
8. customtriturated with hexane
9. customto provide crystals
10. filtrationThe solid was collected by filtration