反应详情

One gram of 1,20-eicosanedicarboxylic acid monomethyl ester is dissolved in 5 ml of thionyl chloride. After stirring at room temperature for 12 hours, excess thionyl chloride is distilled off under reduced pressure to give crude crystals of methyl 21-chloroformylheneicosanoate. This product is submitted to the following step without purification.

1. distillationexcess thionyl chloride is distilled off under reduced pressure