Readily available hydrogen bond catalysts for the asymmetric transfer hydrogenation of nitroolefins
作者:Jakob F. Schneider、Markus B. Lauber、Vanessa Muhr、Domenic Kratzer、Jan Paradies
DOI:10.1039/c1ob05059a
日期:——
focuses on readily accessible thiourea hydrogen bond catalysts derived from amino acids, whose steric and electronic features are modulated by their degree of substitution at the carbinol carbon center. These catalysts were applied in the asymmetric transfer hydrogenation of nitroolefins furnishing the chiral products in up to 99% yield and 86% enantiomeric excess. The proposed catalyst's mode of action
本文着重于易于访问的内容 硫脲衍生自氨基酸的氢键催化剂,其位阻和电子特征受其在甲醇碳中心的取代度的调节。这些催化剂被用于硝基烯烃的不对称转移氢化,从而以高达99%的收率和86%的对映体过量提供手性产物。所提出的催化剂的作用方式得到机理研究的支持。