Competitive formation of spiro[5.5]undecane in preference to bicyclo[4.3.1]decane via type II carbonyl ene reaction
作者:Adusumilli Srikrishna、Chikkana Dinesh
DOI:10.1016/j.tetasy.2005.06.011
日期:2005.7
isopropenyl group at the C-1 position of a 3-isopropenylcyclohexaneacetaldehyde failed to generate the spiro[4.5]decane and produced only bicyclo[4.3.1]decanol. However, the presence of a methallyl group at the C-1 position of 3-isopropenylcyclohexaneacetaldehyde generated exclusively the spiro[5.5]undecanols.
在3-异丙烯基环己烷乙醛的C-1位上存在异丙烯基不能产生螺[4.5]癸烷,而仅产生双环[4.3.1]癸醇。但是,在3-异丙烯基环己烷乙醛的C-1位上存在甲基烯丙基会专门生成螺[5.5]十一烷醇。