Asymmetric Catalytic Epoxidation of Enones by Chiral Binaphthol-derived Lanthanum Catalyst

• 来源期刊: 中国化学（英文版）
• 学科: 化学
• 年，卷（期）: 2001,（12）
• 页码范围: 1225-1231
• 页数: 7页
• 分类号: O6
• 语种: 英文

摘要

Asymmeaic epoxidation of chalcone catalyzed by chiral ( S )-6,6′-diphenyI-BINOL-lanthammn complex affords the corre-sponding epoxychalcone with excellent yields as well as thegood enantioselective excesses of 93%.The mfiuences of solvent,the temperature,the structure of the chiral ligand,aswell as the substrate on the stereochemistry were discussed.``