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.
Treatment of 1,6-dialkylhexa-1,5-diene-3,4-diones with bis(iodozincio)methane at −78 °C for several hours gave cis-dialkenylcyclopropane-1,2-diols which rearranged into the zinc alkoxides of cis-5,...
1,6-二烷基六-1,5-二烯-3,4-二酮在 -78 °C 下用双(碘锌)甲烷处理数小时,得到顺式二烯基环丙烷-1,2-二醇,其重排为顺式5,...