Ruthenium-Catalyzed Hydroarylation of Anilides with Alkynes: An Efficient Route to <i>Ortho</i>-Alkenylated Anilines
作者:Rajendran Manikandan、Masilamani Jeganmohan
DOI:10.1021/ol403666s
日期:2014.2.7
Acetanilides reacted with symmetrical as well as unsymmetrical alkynes in the presence of [RuCl2(p-cymene)}2], pivalic acid, and AgSbF6 in iso-PrOH providing ortho-alkenylated acetanilides in a highly regio- and stereoselective manner. Later, ortho-alkenylated acetanilides were converted into ortho-alkenylated anilines in the presence of HCl.
Rhodium(III)-Catalyzed Intermolecular Hydroarylation of Alkynes
作者:Derek J. Schipper、Marieke Hutchinson、Keith Fagnou
DOI:10.1021/ja103080d
日期:2010.5.26
The rhodium(III)-catalyzed hydroarylation of internal alkynes is described. Good yields are obtained for a variety of alkynes, and excellent regioselectivity is observed for unsymmetrically substituted alkynes. The reaction also gives good yields for a range of arenes. Preliminary mechanistic investigations suggest that this reaction proceeds through arene metalation with the cationic rhodium catalyst, which enables challenging intermolecular reactivity.