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US4764642A Process for preparing optically active alpha-haloalkyl-aryl-ketones 失效
制备光学活性α-卤代烷基 - 芳基酮的方法

Process for preparing optically active alpha-haloalkyl-aryl-ketones
摘要:
A process is described for preparing alpha-haloalkyl-aryl-ketones, comprising reacting a substantially anhydrous strong acid with a ketal of formula ##STR1## in which Ar, R, R.sub.1, R.sub.2 and X have the meanings given in the description.
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