申请人:The Board of Trustees of the University of Illinois
公开号:US10370393B2
公开(公告)日:2019-08-06
The present disclosure provides tri-orthoalkylphenyl phosphine catalysts of formula I
wherein A is CH2, C═O, or NRA; R1 is aryl, heteroaryl, isopropyl, tert-butyl, cycloalkyl, or heterocycloalkyl, wherein aryl, heteroaryl, cycloalkyl and heterocycloalkyl are optionally substituted; R2 is H, (C1-C8)alkyl, (C1-C8)alkoxy, N(RA)2, or an electron withdrawing group; and each RA is independently H or (C1-C8)alkyl; that are tuned electrically and sterically.
本公开提供了式 I 的三正烷基苯基膦催化剂
其中,A 是 CH2、C═O 或 NRA;R1 是芳基、杂芳基、异丙基、叔丁基、环烷基或杂环烷基,其中芳基、杂芳基、环烷基和杂环烷基可选择被取代;R2 是 H、(C1-C8)烷基、(C1-C8)烷氧基、N(RA)2 或一个电子萃取基团;每个 RA 独立地是 H 或 (C1-C8)烷基;它们在电性和立体性上可调谐。