Nucleophilic addition of difluoromethyl phenyl sulfone to aldehydes and various transformations of the resulting alcohols
作者:G.Patrick Stahly
DOI:10.1016/s0022-1139(00)81636-x
日期:1989.4
Nucleophilic addition of difluoromethyl phenyl sulfone (1) to various aldehydes occurred in a two phase system (50% aqueous sodium hydroxide, dichloromethane. Aliquat® 336) to give difluoro(phenylsulfonyl)methyl substituted alcohols (2/28). The product alcohol derived from para-tolualdehyde was converted to the difluoromethylated alcohol by desulfonylation and to the α, β, β-trifluorostyrene by a
在两相系统(50%氢氧化钠水溶液,二氯甲烷,Aliquat®336)中,将二氟甲基苯砜(1)亲核加成,得到二氟(苯磺酰基)甲基取代的醇(2/28)。衍生自对甲苯甲醛的产物醇通过去磺酰化被转化为二氟甲基化的醇,并且通过氟化消除序列被转化为α,β,β-三氟苯乙烯。在没有醛的情况下,1在两相体系中反应生成二氟(苯磺酰基)甲基苯硫醚(9)。研究了后者转化的途径。