Zinc-copper(I) chloride or -silver acetate promoted coupling reaction of 2-[(Trimethylsilyl)methyl]-3-chloro-3,3-difluoropropene with carbonyl compounds. Highly efficient access to 2,2-difluoro homoallyl alcohols
作者:Takashi Ishihara、Seiji Miwatashi、Manabu Kuroboshi、Kiitiro Utimoto
DOI:10.1016/s0040-4039(00)74490-x
日期:1991.2
2-[(Trimethylsilyl)methyl]-3-chloro-3,3-difluoropropene, readily prepared in two steps from methyl chlorodifluoroacetate and (trimethylsilyl)methylmagnesium chloride, is reduced to couple regioselectivity with a variety of carbonyl compounds in the presence of zinc-copper(I) chloride or -silver acetate to give 2,2-difluoro-3-[(trimethylsilyl)methyl]-3-buten-1-ol derivatives in good to excellent yields
2-[(三甲基甲硅烷基)甲基] -3-氯-3,3-二氟丙烯可以很容易地从氯二氟乙酸甲酯和(三甲基甲硅烷基)甲基氯化镁分两步制备,在锌存在下还原成具有多种羰基化合物的区域选择性-氯化铜(I)或-乙酸银,以良好或优异的产率得到2,2-二氟-3-[((三甲基甲硅烷基)甲基] -3-丁烯-1-醇衍生物。