作者:Ronald V. Lerum、John D. Chisholm
DOI:10.1016/j.tetlet.2004.07.036
日期:2004.8
useful catalyst system for the 1,4-addition of alkynes to unsubstituted vinyl ketones. Best yields are obtained when the transformation is performed in benzene at reflux with an excess of vinyl ketone. Both aryl and alkyl substituted alkynes participate in the reaction. Primary alcohols and alkyl chlorides are well tolerated under these reaction conditions. The reaction also proceeds in aqueous solvent
在等摩尔量的三(邻甲氧基苯基)膦存在下,金属络合物Rh(acac)(CO)2为炔烃1,4-加成至未取代的乙烯基酮提供了有用的催化剂体系。当在苯中以过量的乙烯基酮在回流下进行转化时,可获得最佳产率。芳基和烷基取代的炔烃均参与该反应。在这些反应条件下,伯醇和烷基氯具有良好的耐受性。与大多数有机金属加成反应不同,该反应还可以在水性溶剂混合物中进行。