Evaluation of polymer-supported vinyltin reagents in the Stille cross-coupling reaction
作者:Jean-Mathieu Chrétien、Aurélie Mallinger、Françoise Zammattio、Erwan Le Grognec、Michaël Paris、Gilles Montavon、Jean-Paul Quintard
DOI:10.1016/j.tetlet.2007.01.028
日期:2007.3
The synthesis of two new vinyltin reagents grafted on an insoluble macroporous polymer is reported. These reagents were used in the palladium-catalyzed Stille cross-coupling reaction with aryl halides. In all reactions, the conversion of the starting aryl halide is high and the amount of organotin by-product is particularly low (at the end of the catalytic run, the amount of Sn is up to 16 ppm in the
报道了在不溶性大孔聚合物上接枝的两种新的乙烯基锡试剂的合成。这些试剂用于与芳基卤化物进行钯催化的Stille交叉偶联反应。在所有反应中,起始芳基卤化物的转化率高,有机锡副产物的量特别低(在催化操作结束时,从反应釜中除去的粗制反应混合物中,Sn的量高达16 ppm。不溶聚合物,并且在硅胶色谱上纯化的产物中其含量小于1 ppm。