Disclosed is a process for producing 2-bromo-2,2-difluoroethanol, which comprises reducing a bromodifluoroacetic acid derivative represented by the formula [1] by using an ate hydride complex as a reducing agent. 2-Bromo-2,2-difluoroethanol thus produced can be used as the starting material to carry out the esterification step, the sulfination step and the oxidation step in this order, thereby producing a 2-alkylcarbonyloxy-1,1-difluoroethanesulfonic acid salt, wherein A represents a substituted or unsubstituted linear, branched or cyclic alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 15 carbon atoms, a heteroaryloxy group having 4 to 15 carbon atoms, or a halogen atom.
本发明公开了一种生产2-
溴-
2,2-二氟乙醇的过程,包括使用酸式
溴二氟乙酸衍
生物[1]通过使用酯基化合物作为还原剂还原。因此,生产的2-
溴-
2,2-二氟乙醇可以用作开始材料,按照酯化步骤、磺化步骤和氧化步骤的顺序进行,从而生产2-烷基羰氧基-
1,1-二氟乙烷磺酸盐,其中A表示具有1至20个碳原子的取代或未取代的线性、支链或环烷氧基团、具有6至15个碳原子的取代或未取代的芳氧基团、具有4至15个碳原子的杂环氧基团或卤素原子。