A Highly Effective Bis(sulfonamide)-Diamine Ligand: A Unique Chiral Skeleton for the Enantioselective Cu-Catalyzed Henry Reaction
作者:Wei Jin、Xincheng Li、Yongbo Huang、Fan Wu、Boshun Wan
DOI:10.1002/chem.201000964
日期:——
As a unique chiral skeleton, the newly developed bis(sulfonamide)–diamine, which contains both diamine and bis(sulfonamide) moieties, was a highly effective ligand for the asymmetric Cu(OAc)2‐catalyzed Henry reactionbetween nitromethane and aldehydes with a low catalyst loading at room temperature (see scheme). Both aliphatic and aromatic aldehydes gave excellent enantioselectivities of up to 99 % ee