A highly efficient approach to indolo [1,2-a]quinoxaline derivatives through a Pd-catalyzed regioselective C–Holefination/cyclization sequence has been developed. This transformation has a wide range of substrates with various functional groups, and the corresponding heterocyclic products were obtained in good yields.
已经开发出了一种高效的方法,可通过Pd催化的区域选择性C–H烯化/环化序列制备吲哚[1,2- a ]喹喔啉衍生物。该转化具有多种具有各种官能团的底物,并且以良好的产率获得了相应的杂环产物。
AuI-Catalyzed Direct Hydroamination/Hydroarylation and Double Hydroamination of Terminal Alkynes
作者:Nitin T. Patil、Pediredla G. V. V. Lakshmi、Vipender Singh
DOI:10.1002/ejoc.201000389
日期:2010.8
An efficient method for formal Markownikoff hydroamination/hydroarylation and doublehydroamination of terminalalkynes has been developed. For example, treatment of terminalalkynes with amino-aromatics or diamines in the presence of 2-5 mol-% of Ph 3 PAuNTf 2 in toluene at 100 °C gave the corresponding products in excellent yields. The method was shown to be applicable to a broad range of substrates