作者:Ryuji Matsumura、Toshio Suzuki、Kohki Sato、Takashi Inotsume、Hisahiro Hagiwara、Takashi Hoshi、Vijayendra P Kamat、Masayoshi Ando
DOI:10.1016/s0040-4039(00)01344-7
日期:2000.9
An efficient and versatile method for the stereospecific construction of alpha,omega-cis- and alpha,omega-trans-disubstituted oxepane skeletons is described. Cyclization of the hydroxy epoxides promoted by a (Bu3Sn)(2)O/Zn(OTf)(2) system proceeded via an S(N)2 process and exo mode selectivity regardless of the configuration of the hydroxyl and the epoxy groups to provide the corresponding oxepanes in excellent yields. (C) 2000 Elsevier Science Ltd. All rights reserved.