Gold-catalyzed cycloisomerization reactions of boronated enynes
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 silversalts 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