An Efficient Domino Approach for the Synthesis of Multisubstituted Pyrroles via Gold/Silver-Catalyzed Amination/Cycloisomerization of (Z)-2-En-4-yn-1-ols
作者:Yuhua Lu、Xiaoping Fu、Haoyi Chen、Xiangwei Du、Xueshun Jia、Yuanhong Liu
DOI:10.1002/adsc.200800490
日期:2009.1
An efficient and one-pot synthesis of multisubstitutedpyrroles with high diversity and in a regioselective manner from the reactions of suitably substituted (Z)-enynols with amines or sulfonamides under mild reaction conditions has been developed. This synthesis was realized via a cascade process in the presence of gold/silver (Au/Ag) or boron trifluoride⋅etherate/gold/silver (BF3⋅Et2O/Au/Ag) catalysts
已经开发了由适当取代的(Z)-烯醇与胺或磺酰胺在温和的反应条件下的反应以区域选择性的方式高效且一锅合成高多样性的多取代吡咯的方法。该合成实现了通过在金/银(金/银)的存在下,级联过程或硼trifluoride⋅etherate/金/银(BF 3 ⋅Et 2 O /金/银)催化剂,它可以催化胺化和环异构反应在同一艘船上。
A general and efficient synthesis of substituted furans and dihydrofurans via gold-catalyzed cyclization of (Z)-2-en-4-yn-1-ols
作者:Xiangwei Du、Feijie Song、Yuhua Lu、Haoyi Chen、Yuanhong Liu
DOI:10.1016/j.tet.2008.11.109
日期:2009.2
A highlyefficient Au-catalyzed cyclization of (Z)-enynols that proceeds under mild reaction conditions has been developed. This methodology provides rapid access to substituted furans and stereodefined (Z)-5-ylidene-2,5-dihydrofurans in a regioselective manner from suitably substituted (Z)-2-en-4-yn-1-ols.
Gold-Catalyzed Cyclization of Alkynylaziridines as an Efficient Approach toward Functionalized <i>N</i>-Phth Pyrroles
作者:Xiangwei Du、Xin Xie、Yuanhong Liu
DOI:10.1021/jo902357x
日期:2010.1.15
An efficient access to N-phth pyrrroles via gold-catalyzed cycloisomerization of N-phth alkynylaziridines has been described. Functionalized pyrroles including pyrrole-2-carboxylates or 2-pyrrolyl ketone are easily constructed in generally good yields by this method. The resulting pyrroles can be further converted to N-amino pyrrole or 2-acyl pyrrole, which are important synthetic intermediates for