Cyclization of γ,δ-epoxy-α-cyanosulphones. A simple, diastereoselective route to cyclopropane carboxylic acids.
作者:Fabio Benedetti、Federico Berti、Amerigo Risaliti
DOI:10.1016/0040-4039(93)85066-6
日期:1993.10
cyclisation of α-cyano-α-sulphonyl-γ,δ-epoxy carbanions proceeds with high yields and complete diastereoselectivity, to yield cyclopropanolactones, useful intermediates in the synthesis of cis-substituted cyclopropane carboxylic acids.
α-氰基-α-磺酰基-γ,δ-环氧碳负离子的环化以高收率和完全非对映选择性进行,以产生环丙醇内酯,其是在顺式取代的环丙烷羧酸的合成中有用的中间体。