Rhodium-Catalyzed Enantioselective and Diastereoselective Hydrogenation of β-Ketoenamides: Efficient Access to<i>anti</i>1,3-Amino Alcohols
作者:Huiling Geng、Weicheng Zhang、Jian Chen、Guohua Hou、Le Zhou、Yaping Zou、Wenjun Wu、Xumu Zhang
DOI:10.1002/anie.200902339
日期:2009.8.3
Valuable chiral building blocks were synthesized with excellent enantioselectivity and diastereoselectivity through tandem hydrogenation of (Z)‐β‐ketoenamides, which were in turn prepared by the direct condensation of 1,3‐diketones with acetamide (see scheme). The chiral amino alcohol products can be converted into useful γ‐aryl isobutylamines through hydrogenolysis with Pd/C. R1=aryl, heteroaryl,
通过(Z)-β-酮烯酰胺的串联氢化合成有价值的手性结构单元,具有出色的对映体选择性和非对映体选择性,然后通过1,3-二酮与乙酰胺的直接缩合制备(见方案)。通过Pd / C氢解可将手性氨基醇产物转化为有用的γ-芳基异丁胺。R 1=芳基,杂芳基,甲基;R 2=烷基。