Mechanistic Insights into the Gold-Catalyzed Cycloisomerization of Bromoallenyl Ketones: Ligand-Controlled Regioselectivity
作者:Yuanzhi Xia、Alexander S. Dudnik、Vladimir Gevorgyan、Yahong Li
DOI:10.1021/ja802144t
日期:2008.6.1
Through computational and experimental studies, the mechanisms of gold-catalyzedcycloisomerization of bromoallenyl ketones in toluene have been elucidated. The divergent 1,2-migrations for the Au(I)- and Au(III)-catalyzed reactions have been investigated, and the results confirmed that the regiochemistry is ligand-dependent in cases of Au(PR3)L (L = Cl, OTf, BF4, and SbF6) catalysts.