Synthesis of Chiral 2-Aroyl-1-tetralols: Asymmetric Transfer Hydrgenation of 2-Aroyl-1-tetralones via Dynamic Kinetic Resolution
作者:Yun Wu、Zhicong Geng、Jinjin Bai、Yawen Zhang
DOI:10.1002/cjoc.201180267
日期:2011.7
The dynamic kinetic resolution of 2‐aroyl‐1‐tetralones was achieved via asymmetric transfer hydrogenation using (S,S)‐RuCl(p‐cymene)TsDPEN (TsDPEN=N‐(tosyl)‐1,2‐diphenylethylenediamine) in formic acid/triethyl‐ amine (5:2, molar ratio), afforded the desired products in good yields (up to 85%) with diastereomeric ratio up to >99:1 and high enantiomeric excesses (up to >99%). The absolute configuration
通过在甲酸中使用(S,S)-RuCl(p- cymene)TsDPEN(TsDPEN = N-(甲苯磺酰基)-1,2-二苯基乙二胺)进行不对称转移氢化,可以实现2-芳酰基-1-四酮的动态动力学拆分。/三乙胺(摩尔比为5:2),以良好的收率(高达85%)提供了所需的产物,非对映体比率高达> 99:1,对映体过量很高(高达> 99%)。X射线晶体结构分析证实了该产品主要成分的绝对构型。