Regioselectivity in the ene reaction of singlet oxygen with ortho-prenylphenol derivatives
作者:Jean-Jacques Helesbeux、Olivier Duval、David Guilet、Denis Séraphin、David Rondeau、Pascal Richomme
DOI:10.1016/s0040-4020(03)00733-6
日期:2003.6
The ene reaction of singlet oxygen with prenylated dihydroxyacetophenones led to the 2-hydroperoxy-3-methylbut-3-enyl derivatives as the major product. This original regioselectivity outlined a new effect, in competition with the previously established large group non-bonding effect. The oxidation products distribution could be explained by a stabilising interaction between the phenolic hydrogen, ortho
单线态氧与烯丙基化的二羟基苯乙酮的烯反应导致以2-氢过氧-3-甲基丁-3-烯基衍生物为主要产物。这种原始的区域选择性概述了一种新的作用,与先前确立的大分子非键合作用相竞争。氧化产物的分布可以通过在异戊二烯基侧链邻位的酚氢与过氧化物中间体之间的稳定相互作用来解释。