作者:Rogelio Ocampo、William R. Dolbier、Rodrigo Paredes
DOI:10.1016/s0022-1139(97)00134-6
日期:1998.2
A new method for the general synthesis of 1,1-difluoroalkenes from ketones is presented. The procedure involves initial condensation of a ketone with the difluoro Reformatsky reagent, hydrolysis to form the α,α-difluoro-β-hydroxy acids, followed by cyclization to make the novel α,α-difluoro-β-lactones. These are then thermally decarboxylated to form the 1,1-difluoroalkenes.
提出了一种由酮一般合成1,1-二氟烯烃的新方法。该方法包括将酮与二氟Reformatsky试剂进行初始缩合,水解形成α,α-二氟-β-羟基酸,然后环化生成新型α,α-二氟-β-内酯。然后将它们热脱羧以形成1,1-二氟烯烃。