Oxidative and Enantioselective Cross-Coupling of Aldehydes and Nitromethane Catalyzed by Diphenylprolinol Silyl Ether
作者:Yujiro Hayashi、Takahiko Itoh、Hayato Ishikawa
DOI:10.1002/anie.201006885
日期:2011.4.18
Synthetically important β‐substituted γ‐nitro aldehydes have been synthesized with excellent enantioselectivity by the cross‐coupling reaction of β‐aryl substituted aldehydes or γ,δ‐unsaturated aldehydes and nitromethane using 2,3‐dichloro‐5,6‐dicyanoquinone (DDQ) and diphenylprolinol silyl ether as an oxidant and catalyst, respectively (see scheme; TMS=trimethylsilyl).
使用2,3-二氯-5,6-二氰基醌(DDQ)通过β-芳基取代的醛或γ,δ-不饱和醛与硝基甲烷的交叉偶联反应合成了具有重要对映选择性的重要合成的重要β-取代的γ-硝基醛。 )和二苯基脯氨醇甲硅烷基醚分别作为氧化剂和催化剂(请参见方案; TMS =三甲基甲硅烷基)。