and the corresponding dihaloalkane has been evaluated. The reaction occurs in a chemo and stereoselective manner, which is consistent with a directing effect from the oxygen of the allylic moiety. Furthermore, a set of polyenes containing allylic hydroxyl or ether groups were chemoselectively and stereoselectively converted into the corresponding gem-dimethylcyclopropanes in one single step in moderate
已评估了
香叶醇与由n -BuLi生成的不同
锂类
胡萝卜素与相应的二卤代
烷烃的反应。该反应以
化学和立体选择性的方式发生,这与来自烯丙基部分的氧的指导作用是一致的。此外,一组含有烯丙基羟基或醚基团的多烯的均
化学选择性和立体选择性地转化为相应的宝石-dimethylcyclopropanes在一个单一步骤中中度至以
锂介导的良好的产率产生卡宾原位通过反应Ñ
正丁基锂和2, 2-二
溴丙烷。