作者:Jack Chang Hung Lee、Dennis G. Hall
DOI:10.1016/j.tetlet.2010.11.051
日期:2011.1
Gold (I) complexes generated from a mixture of gold and silver salts were found to be highly reactive for the cycloisomerization reactions of boronated enynes. Both alkynyl pinacol boronates and alkenyl pinacol boronates were tolerated, affording products in moderate to high yields. Interestingly, the ratio of the different endo- and exo-products was heavily dependent on the position of the boronate
发现由金和银盐的混合物产生的金(I)络合物对硼化的炔烃的环异构化反应具有高反应性。炔醇频哪醇硼酸酯和烯基频哪醇硼酸酯均被耐受,从而以中等至高收率提供产物。有趣的是,不同的内产物和外产物的比例在很大程度上取决于硼酸酯官能团的位置。可以进行进一步的应用,包括铃木-宫浦交叉偶联和氧化反应,从而提供各种合成上有用的产品。