ASYMMETRIC CYCLIZATION PROCESSES USING UNSATURATED NITRO COMPOUNDS
申请人:ZHONG Guofu
公开号:US20100298576A1
公开(公告)日:2010-11-25
Disclosed are processes of forming a compound (33), (35) or (37)
公开了形成化合物(33),(35)或(37)的过程。
US8754252B2
申请人:——
公开号:US8754252B2
公开(公告)日:2014-06-17
Control of Four Stereocenters in an Organocatalytic Domino Double Michael Reaction: Efficient Synthesis of Multisubstituted Cyclopentanes
作者:Bin Tan、Zugui Shi、Pei Juan Chua、Guofu Zhong
DOI:10.1021/ol801246m
日期:2008.8.21
A highly enantioselective and diastereoselective dominoorganocatalytic double Michael reaction which provides expedited access to multifunctionalized five-membered rings catalyzed by 9-amino-9-deoxyepiquinine (V) has been developed. Simple operational procedures, high yields (81-92%), excellent enantioselectivity (90-97% ee), diastereoselectivities (95:5->99:1 dr), and immense potential of synthetic