Organocatalyst-Mediated Dynamic Kinetic Enantioselective Acylation of 2-Chromanols
作者:Daniel A. Glazier、John M. Schroeder、Jitian Liu、Weiping Tang
DOI:10.1002/adsc.201800994
日期:2018.12.3
We recently developed a novel chiral catalyst‐directed dynamic kinetic diastereoselective acylation of hemiacetals for the synthesis of carbohydrates. In this update, we describe a catalytic method for the dynamic kinetic enantioselective acylation of 2‐chromanols using benzotetramisole derived catalysts. High yields and enantiomeric excesses were obtained for a broad range of acylated 2‐chromanols
我们最近开发了一种新型的手性催化剂导向的半缩醛动态动力学非对映选择性酰化方法,用于碳水化合物的合成。在此更新中,我们描述了使用苯并四咪唑衍生的催化剂对2-苯并二氢吡喃醇进行动态动力学对映选择性酰化的催化方法。广泛的酰化2-苯并二氢吡喃醇获得了高收率和对映体过量,这是合成各种生物活性药物的重要中间体。我们假设,该反应的源自从一个新颖的阳离子高立体选择性Ñ色原烷醇基板和酰化催化剂之间的相互作用。