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 : Mannichreaction, Asymmetric catalysis, Bifunctional organocatalyst, α-Fluoro-β-ketoesters