In a process for chlorinating ketones which, apart from the carbonyl group, are inert in respect of triarylphosphine dichlorides, except for cyclopropyl methyl ketone, in which the ketones are reacted with a chlorinating agent in the presence of triarylphosphine oxides, the amount of triarylphosphine oxide is from 0.1 to 10 mol %, based on the amount of ketone. The ketones preferably have a least one CH-acid proton in the &agr; position to the carbonyl group.
在
氯化酮的过程中,除了羰基以外,在三芳基膦二
氯化物方面是惰性的,除了
环丙基甲基酮外,在三芳基膦氧化物的存在下,酮与
氯化剂反应,三芳基膦氧化物的量为酮的量的0.1至10摩尔%。酮最好在羰基的α位置至少有一个CH-酸质子。