Chiral phosphine-catalyzed asymmetric allylic alkylation of 3-substituted benzofuran-2(3H)-ones or oxindoles with Morita–Baylis–Hillman carbonates
作者:De Wang、Yuan-Liang Yang、Jia-Jun Jiang、Min Shi
DOI:10.1039/c2ob25694k
日期:——
An efficient chiral phosphine-catalyzed asymmetric substitution reaction of MBH carbonates with 3-substituted benzofuran-2(3H)-ones or 3-substituted oxindoles has been described in this context, giving the corresponding allylic alkylation products bearing adjacent quaternary and tertiary stereogenic centers in high yields, moderate diastereoselectivities and high enantioselectivities under mild conditions
在此上下文中,已经描述了MBH碳酸酯与3-取代的苯并呋喃-2(3 H)-ones或3-取代的羟吲哚的有效手性膦催化的不对称取代反应,得到了带有相邻的季铵和叔立体异构中心的相应的烯丙基烷基化产物。在温和条件下具有高收率,中等非对映选择性和高对映选择性。