Divalent samarium-induced cyclopropanation of lithium enolates. A one-pot synthesis of cyclopropanols from ketones
作者:Tsuneo Imamoto、Nobuyuki Takiyama
DOI:10.1016/s0040-4039(00)95354-1
日期:1987.1
Lithium enolates, generated by deprotonation of ketones with lithium diisopropylamide, react with diiodomethane in the presence of SmI2 to give cyclopropanols.
由酮与二异丙基氨基锂去质子化生成的烯醇化锂在SmI 2的存在下与二碘甲烷反应生成环丙醇。
Oxidative rearrangement of bicyclo[n.1.0]alkan-1-ols in the presence of oxygen
Peroxidated compounds were prepared by treatment of ether solutions of bicyclo[n.1.0]alkanols with oxygen in the presence of silica gel, ferric acetylacetonate and light.
在硅胶,乙酰丙酮铁和光的存在下,用氧处理双环[n.1.0]链烷醇的醚溶液,可制得过氧化的化合物。
Imamoto, Tsuneo; Hatajima, Toshihiko; Takiyama, Nobuyuki, Journal of the Chemical Society. Perkin transactions I, 1991, # 12, p. 3127 - 3135
Copper- or iron-catalyzed oxidative rearrangement of bicy- clo[n.1.0]alkan-1-ols yields 3-hydroperoxycycloalkanones and/or bicyclic peroxyhemiketals, which are transformed into 2,3-epoxy- cycloalkanones by treatment with a base.