Studies on Highly Stereoselective Addition−Elimination Reactions of 3-(Methoxycarbonyl)-1,2-allen-4-ols with MX. An Efficient Synthesis of 3-(Methoxycarbonyl)-2-halo-1,3(<i>Z</i>)-dienes
作者:Youqian Deng、Xin Jin、Shengming Ma
DOI:10.1021/jo070725m
日期:2007.7.1
3-(Methoxycarbonyl)-2-halo-1,3(Z)-dienes were prepared highly stereoselectively via SN2‘-type addition−elimination reactions of 3-(methoxycarbonyl)-1,2-allen-4-ols with MX. These products may easily undergo Negishi or Sonogashira coupling reactions to yield a series of stereodefined polysubstituted (E)-1,3-dienes.
3-(甲氧基羰基)-2-卤代-1,3(Z)-二烯是通过3-(甲氧基羰基)-1,2-烯丙基-4-醇的S N 2'型加成-消除反应高度立体选择性地制备的MX。这些产物可能容易进行Negishi或Sonogashira偶联反应,从而生成一系列立体定义的多取代(E)-1,3-二烯。