申请人:Mueller Thomas Norbert
公开号:US20140243561A1
公开(公告)日:2014-08-28
Process for preparing 2,2-difluoroethanol, comprising the following steps: reacting 1-chloro-2,2-difluoroethane with an alkali metal salt of formic acid or acetic acid in a suitable solvent to give the corresponding 2,2-difluoroethyl formate or 2,2-difluoroethyl acetate, and transesterifying the 2,2-difluoroethyl formate or 2,2-difluoroethyl acetate from step (i) in the presence of an alcohol and optionally of a base.
制备2,2-二氟乙醇的过程包括以下步骤:在适当的溶剂中将1-氯-2,2-二氟乙烷与甲酸或乙酸的碱金属盐反应,得到相应的2,2-二氟乙基甲酸酯或2,2-二氟乙基乙酸酯,然后在醇和可能的碱存在下,对步骤(i)中得到的2,2-二氟乙基甲酸酯或2,2-二氟乙基乙酸酯进行酯交换反应。