The nucleophilic cyclopropanation of hexa-1,5-diene-3,4-diones with bis(iodozincio)methane afforded the Zn alkoxides of cis-dialkenylcyclopropane-1,2-diols stereoselectively. The subsequent oxy-Cope rearrangement afforded the corresponding Zn alkoxides of 5,6-dialkylcyclohepta-3,7-diene-1,3-diols.
六-1,5-二烯-3,4-二酮与双(
碘嗪)
甲烷的亲核
环丙烷化可立体选择性地提供顺式-二烯基
环丙烷-1,2
-二醇的
锌醇盐。随后的oxy-Cope重排得到5,6-二烷基环庚-3,7-二烯-1,3
-二醇的相应的Zn醇盐。