Alkylidenesilacyclopropanes Derived from Allenes: Applications to the Selective Synthesis of Triols and Homoallylic Alcohols
作者:Kay M. Buchner、Timothy B. Clark、Janice M. N. Loy、Thong X. Nguyen、K. A. Woerpel
DOI:10.1021/ol900456v
日期:2009.5.21
transfer to allenes. Oxasilacyclopentanes derived from allenes were prepared with high regio- and diastereoselectivity by a two-step, one-flask silacyclopropanation/carbonyl insertion reaction. Triols and homoallylic alcohols were formed diastereoselectively by functionalizing the oxasilacyclopentanes. An optically active allene (>98% ee) was utilized to synthesize an enantiopure homoallylic alcohol in 96%
几种亚烷基硅杂环丙烷是通过银介导的甲硅烷基转移到丙二烯来制备的。通过两步、单烧瓶硅杂环丙烷化/羰基插入反应,以高区域选择性和非对映选择性制备了衍生自丙二烯的氧硅杂环戊烷。通过对氧硅杂环戊烷进行官能化,非对映选择性地形成三醇和高烯丙醇。光学活性丙二烯 (>98% ee) 用于合成 96% ee 的对映纯高烯丙醇。