Asymmetric Mannich-type Reactions of Fluorinated Ketoesters with Binaphthyl-Modified Thiourea Catalysts
作者:Young-Ku Kang、Sung-Je Yoon、Dae-Young Kim
DOI:10.5012/bkcs.2011.32.4.1195
日期:2011.4.20
enantioselective Mannich-type reaction promoted by chiral binaphthyl-modified bifunctionalorganocatalysts is described. The treatment of α-fluoro-β-ketoesters with N-Boc imines under mild reactionconditions afforded the corresponding β-aminated α-fluoro-β-ketoesters with excellent enantioselectivities (upto 98% ee).Key Words : Mannich reaction, Asymmetric catalysis, Bifunctional organocatalyst, α-Fluoro-β-ketoesters
E-mail: dyoung@sch.ac.kr 2010 年 12 月 31 日接收,2011 年 2 月 4 日接受 描述了手性联萘修饰的双功能有机催化剂促进的催化对映选择性曼尼希型反应。在温和的反应条件下用 N-Boc 亚胺处理 α-氟代-β-酮酯,得到相应的 β-胺化 α-氟-β-酮酯,具有优异的对映选择性(高达 98% ee)。关键词:曼尼希反应,不对称催化,双功能有机催化剂、α-氟代-β-酮酯、N-Boc 亚胺简介氟化分子在药物和有机化学中具有重要意义。