Chiral phosphorus cyclic compounds for transition metal-catalyzed asymmetric reactions
申请人:THE PENN STATE RESEARCH FOUNDATION
公开号:US20040072680A1
公开(公告)日:2004-04-15
Chiral phospholanes having biaryl chirality for applications in asymmetric catalysis are provided. A series of new chiral mono- or bidentate phosphorus ligands were efficiently prepared through a key intermediate (S)-4-chloro-4,5-dihydro-3H-4-phospha-cyclohepta[2,1-a;3,4-a′]binaphthalene and its derivatives. These ligands were complexed with transition metals to prepare catalysts, which were used in asymmetric catalytic reactions, such as, asymmetric hydrogenation, hydride transfer, allylic alkylation, hydrosilylation, hydroboration, hydrovinylation, hydroformylation, olefin metathesis, hydrocarboxylation, isomerization, cyclopropanation, Diels-Alder reaction, Heck reaction, isomerization, Aldol reaction, Michael addition; epoxidation, kinetic resolution or [m+n] cycloaddition wherein m=3 to 6 and n=2.
提供了具有双芳基手性的手性磷杂环烷,用于不对称催化应用。通过关键中间体(S)-4-氯-4,5-二氢-3H-4-磷杂环庚[2,1-a;3,4-a′] 二萘及其衍生物高效制备了一系列新的手性单或双齿磷配体。这些配体与过渡金属络合形成催化剂,用于不对称催化反应,如不对称氢化、氢转移、烯丙基烷基化、硅氢化、氢硼化、氢乙烯基化、羰基化、烯烃交换、羧化、异构化、环丙烷化、Diels-Alder反应、Heck反应、Aldol反应、Michael加成;环氧化、动力学分辨或[m+n]环加成,其中m=3到6,n=2。