BIMP‐Catalyzed 1,3‐Prototropic Shift for the Highly Enantioselective Synthesis of Conjugated Cyclohexenones
作者:Jonathan C. Golec、Eve M. Carter、John W. Ward、William G. Whittingham、Luis Simón、Robert S. Paton、Darren J. Dixon
DOI:10.1002/anie.202006202
日期:2020.9.28
A bifunctional iminophosphorane (BIMP)‐catalysed enantioselective synthesis of α,β‐unsaturated cyclohexenones through a facially selective 1,3‐prototropic shift of β,γ‐unsaturated prochiral isomers, under mild reaction conditions and in short reaction times, on a range of structurally diverse substrates, is reported. α,β‐Unsaturated cyclohexenone products primed for downstream derivatisation were obtained
双功能亚氨基正膦 (BIMP) 催化对映选择性合成 α,β-不饱和环己烯酮,通过 β,γ-不饱和前手性异构体的表面选择性 1,3-质子转移,在温和的反应条件和短的反应时间内,在一系列据报道,结构多样的底物。用于下游衍生化的 α,β-不饱和环己烯酮产品以高收率(高达 99%)和一致的高对映选择性(高达 99% ee )获得。对反应机理和对映选择性起源(包括 TS 能量的多元线性回归)进行了计算研究,发现所得数据与实验结果非常吻合。