5-(4-chlorobenzoyl)-1, 2-dihydro-1-pyrrolizinone 、
聚合甲醛 、
dimethylammonium chloride 在
乙醇 作用下,
以
苯 为溶剂,
反应 10.0h,
以13.8 g of (4) was obtained as a white powder, mp 182°-183° C., yield 84%的产率得到5-(4-chlorobenzoyl)-2-dimethylaminomethyl-1, 2-dihydro-1-pyrrolizinone