Trienamine Catalysis with 2,4-Dienones: Development and Application in Asymmetric Diels-Alder Reactions
作者:Xiao-Feng Xiong、Quan Zhou、Jing Gu、Lin Dong、Tian-Yu Liu、Ying-Chun Chen
DOI:10.1002/anie.201200248
日期:2012.4.27
A tri‐ing reaction: An asymmetric Diels–Alder cycloaddition of δ,δ‐disubstituted 2,4‐dienones is possible through the trienamine catalysis of cinchona‐based primary amines (see scheme). An array of electron‐deficient dienophiles, such as N‐substituted maleimides and 3‐alkenyl oxindoles, were tolerated, and multifunctional cyclohexene derivatives were obtained in excellent stereoselectivity and with
Triing反应:δ,δ-二取代的2,4-二壬烯的不对称Diels-Alder环加成反应可能是通过基于金鸡纳酮的伯胺的三烯胺催化而实现的(参见方案)。可以耐受一系列缺电子的亲二烯体,例如N-取代的马来酰亚胺和3-烯基氧吲哚,并以优异的立体选择性和高非对映异构体比率获得了多功能环己烯衍生物。