作者:Isabel Piel、Marc Steinmetz、Keiichi Hirano、Roland Fröhlich、Stefan Grimme、Frank Glorius
DOI:10.1002/anie.201008081
日期:2011.5.16
NHC‐catalysis proto(n)type: The title reaction produces 21 different chroman‐4‐one‐type products in good yields and excellent enantioselectivities, in each case building up a new all‐carbon quaternary stereocenter (see scheme). Based on DFT calculations a mechanistic scenario involving proton transfer, possible transition states, and a mode of enantioinduction is presented.
NHC催化原型(n)型:标题反应以高收率和出色的对映选择性产生21种不同的chroman-4-one型产品,每种情况下都建立了一个新的全碳四元立体中心(参见方案)。基于DFT计算,提出了一种涉及质子转移,可能的过渡态和对映体诱导模式的机制。