A poly(ethylene glycol) (PEG) supported amino alcohol has been developed as a chiral ligand to promote the copper-catalyzed asymmetric nitrolaldol reaction (Henry Reaction) with nitroethanol. The catalyst provides direct access to various syn-2-nitro-1,3-diols with high yields and stereoselectivities. The solubility of PEG moiety allows facile purification and recycling of the catalyst. The utility
已开发聚
乙二醇 (P
EG) 支持的
氨基醇作为手性
配体,以促进
铜催化的与硝基
乙醇的不对称硝醇醛反应(亨利反应)。该催化剂提供了以高产率和立体选择性直接获得各种顺式-2-硝基-1,3
-二醇的途径。P
EG 部分的溶解性使得催化剂易于纯化和回收。
氟苯尼考和
瑞波西汀关键中间体的克级制备进一步证明了催化剂的实用性。