Lin Yuan-bin
2007
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Journal
Chinese Journal of Pharmaceuticals
Abstract
3,5-Difluorophenylacetic acid was prepared from 3,5-difluoro-bromobenzene by Grignard reaction with diethyl oxalate to give ethyl 3,5-difluorobenzoylformate,which was subjected to hydrolysis with KOH and then reduction with hydrazine hydrate with an overall yield of 68%.