Enantioselective Friedel-Crafts Alkylation of 4,7-Dihydroindoles with Enones Catalyzed by Primary-Secondary Diamines
作者:Liang Hong、Wangsheng Sun、Chunxia Liu、Lei Wang、Kwokyin Wong、Rui Wang
DOI:10.1002/chem.200901635
日期:2009.10.26
selectivity: A primary–secondarydiamine catalyst 1 was readily prepared from a commercially available amino acid and has been applied in the asymmetric Friedel–Craftsalkylation of 4,7‐dihydroindoles with α,β‐unsaturated enones. A series of aromatic, aliphatic, and cyclic α,β‐unsaturated ketones can be converted into the desired products in moderate to high yields with excellent enantioselectivities (up to