Chemical transformation of substrates using nonmetallic, organic catalyst compositions
申请人:The Regents of the Univerisity of California
公开号:US06369243B1
公开(公告)日:2002-04-09
A method is provided for catalytically transforming a functional group within a first reactant by reaction with a second reactant in the presence of a nonmetallic, organic catalyst composition composed of a heteroatom-containing activator and an acid, or a salt of a heteroatom-containing activator and an acid. Exemplary first reactants are &agr;,&bgr;-unsaturated carbonyl compounds such as &agr;,&bgr;-unsaturated ketones and &agr;,&bgr;-unsaturated aldehydes. The heteroatom of the activator is a Group 15 or Group 16 element such as nitrogen, oxygen, sulfur or phosphorus, and exemplary heteroatom-containing activators are amines. Chiral heteroatom-containing activators can be used to catalyze enantioselective reactions, such that a chiral product is obtained from a chiral or achiral starting material in enantiomerically pure form.
提供了一种催化转化第一反应物中的功能基团的方法,通过与第二反应物在非金属有机催化剂组合物的存在下反应,该组合物由含有杂原子的活化剂和酸或含有杂原子的活化剂和酸的盐组成。第一反应物的示例是α,β-不饱和羰基化合物,例如α,β-不饱和酮和α,β-不饱和醛。活化剂的杂原子是第15或第16族元素,例如氮、氧、硫或磷,含有杂原子的活化剂的示例是胺。手性含杂原子的活化剂可用于催化对映选择性反应,使手性产物从手性或非手性起始物质中以对映纯形式获得。