Phosphine-Initiated Cascade Annulation of β′-Acetoxy Allenoate and <i>p</i>
-Quinols: Access to Ring Fused Hexahydroindeno Furan Derivatives
作者:Jiao-Jiao Xing、Yu-Ning Gao、Min Shi
DOI:10.1002/adsc.201800319
日期:2018.7.4
diastereoselective cascade annulation process of p‐quinols with β′‐acetoxy allenoate catalyzed by phosphine has been developed, which comes up with highly functionalized multiple ring‐fused hexahydroindeno furan derivatives in synthetically useful yields and creates three consecutive stereogenic carbon centers only in a one‐step manner. The salient features of this phosphine‐catalyzed cyclization include
已开发出一种高非对映选择性的对苯二酚与膦催化的β'-乙酰氧基烯丙基酯的级联环化工艺,该工艺具有高度功能化的多环稠合六氢茚并呋喃衍生物,具有可综合使用的产率,并且仅在一个开环中形成三个连续的立体碳中心。一站式的方式。该膦催化的环化反应的显着特征包括在该级联反应中使用对苯二酚的三个活性位点,较宽的底物范围,出色的官能团耐受性,温和的反应条件,不对称形式,良好的收率,易于放大至克级规模和进一步的转变。