反应详情

A mixture of 4.0 g of N-[3-(6-chloro-3-pyridazinyl)phenyl]acetamide, 0.85 g of sodium hydride (50% in oil) and 300 ml of dry dimethylformamide, under argon, was stirred for 1 hour then 1.42 ml of ethyl iodide was added. After stirring for 2.5 hours, 0.5 equivalent of sodium hydride and 1.1 equivalent of ethyl iodide were added. This mixture was stirred overnight, poured into 1 liter of water and extracted with five 100 ml portions of dichloromethane. The extracts were combined, dried and evaporated in vacuo, giving 3.6 g of the desired compound as tan crystals, mp 105°-110° C.

1. stirringAfter stirring for 2.5 hours
2. stirringThis mixture was stirred overnight
3. extractionextracted with five 100 ml portions of dichloromethane
4. customdried
5. customevaporated in vacuo