A process to make .alpha.,.alpha.-difluoro-.beta.-hydroxy thiol esters of formula (IIIA) ##STR1## comprising reacting a difluoroethanethioate of formula (IVA) ##STR2## with a second reactant selected from the group consisting of aldehydes, ketones, acid halides and esters; in a solvent and in the presence of a strong base; with the proviso that the process is conducted in the absence of a catalyst and in the absence of a silyl containing compound. These thiol esters are useful as intermediates in organic syntheses of pharmaceutical products.
                            制备式为(IIIA)的.alpha.,.alpha.-二
氟-.beta.-羟基
硫酯酯的过程,包括在溶剂和强碱存在下,将式为(IVA)的二
氟乙
硫酸酯与醛、酮、酸卤或酯等第二反应物反应;前提是该过程在无催化剂和无含
硅化合物的情况下进行。这些
硫酯酯在有机合成药物中是有用的中间体。