2,3-Dihydroimidazo[1,2-a]pyridines: A New Class of Enantioselective Acyl Transfer Catalysts and Their Use in Kinetic Resolution of Alcohols
作者:Vladimir B. Birman、Eric W. Uffman、Hui Jiang、Ximin Li、Corey J. Kilbane
DOI:10.1021/ja0491477
日期:2004.10.1
unexplored 2,3-dihydroimidazo[1,2-a]pyridine (DHIP) has been shown to be a competent acyl transfer catalyst. Its chiral 2-phenyl derivatives obtainable in two steps from commercially available starting materials have proved to be effective acylation catalysts, giving high levels of enantioselectivity (s = 20-85) in kinetic resolution of secondary benzylic alcohols. A transition state model explaining
众所周知,但以前未开发的 2,3-二氢咪唑并[1,2-a] 吡啶 (DHIP) 已被证明是一种有效的酰基转移催化剂。其手性 2-苯基衍生物可从市售原料中分两步获得,已被证明是有效的酰化催化剂,在二级苄醇的动力学拆分中具有高水平的对映选择性(s = 20-85)。已经提出了解释观察到的选择性的过渡态模型。