A New Family of Cinchona-Derived Amino Phosphine Precatalysts: Application to the Highly Enantio- and Diastereoselective Silver-Catalyzed Isocyanoacetate Aldol Reaction
作者:Filippo Sladojevich、Andrea Trabocchi、Antonio Guarna、Darren J. Dixon
DOI:10.1021/ja110534g
日期:2011.2.16
developed. In combination with Ag(I) salts, these amino-phosphines performed as effective cooperative Brønsted base/Lewis acid catalysts in the asymmetric aldol reaction of isocyanoacetate nucleophiles. Under optimal conditions, high diastereoselectivities (up to 98%) and enantioselectivities (up to 98%) were obtained.
已经开发了一类新的易于获得的手性氨基膦预催化剂,这些催化剂来源于 9-氨基(9-脱氧)epicinchona 生物碱。与 Ag(I) 盐结合,这些氨基膦在异氰乙酸酯亲核试剂的不对称醛醇反应中作为有效的协同布朗斯台德碱/路易斯酸催化剂发挥作用。在最佳条件下,获得了高非对映选择性(高达 98%)和对映选择性(高达 98%)。