Unconventional isomerization of allylic alcohols to allylcarbinols mediated by lanthanide catalysts
作者:SungYong Seo、Xianghua Yu、Tobin J. Marks
DOI:10.1016/j.tetlet.2013.01.111
日期:2013.4
We report here the catalytic isomerization of aryl-substituted allylic alcohols mediated by lanthanide alkoxide complexes. The conversion yields allylcarbinols as the products of the olefin isomerization process, but with different olefinic positions than those afforded by typical transition metal catalysts. The average isolated product yields in these reactions are 65–81%. The catalytic cycle and
我们在这里报告了由镧系元素醇盐配合物介导的芳基取代的烯丙基醇的催化异构化作用。该转化产生烯丙基甲醇作为烯烃异构化过程的产物,但是具有与典型过渡金属催化剂所提供的烯属位置不同的烯属位置。这些反应中分离出的平均产物产率为65-81%。提出催化循环和异常烯烃定位的来源涉及路易斯酸性La 3+离子与底物羟基之间的强相互作用。