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%)。