Exploring the Stereoselectivity in the Peterson Reaction of Several 2-Substituted 1-Azabicyclo[2.2.2]octan-3-ones
作者:Janne E. Tønder、Mikael Begtrup、John Bondo Hansen、Preben H. Olesen
DOI:10.1016/s0040-4020(00)00015-6
日期:2000.2
The Peterson reaction between a series of 2-substituted 1-azabicyclo[2.2.2]octan-3-ones and 3-methyl-5-trimethylsilanylmethyl isoxazole (1) was explored. (Z)-Stereoselectivity was obtained with all 2-substituents, ranging from 65:35 for benzyl to 95:5 for phenylsulphanyl. Different bases were investigated, revealing that an organolithium base is necessary for the reaction to occur. A transition state