Room Temperature Palladium-Catalyzed Intramolecular Hydroamination of Unactivated Alkenes
作者:Forrest E. Michael、Brian M. Cochran
DOI:10.1021/ja060126h
日期:2006.4.5
A mild and facile Pd-catalyzed intramolecular hydroamination of unactivated alkenes is described. This reaction takes place at roomtemperature and is tolerant of synthetically useful acid-sensitive functional groups. The formation of hydroamination products rather than oxidative amination products is due to the use of a tridentate ligand on Pd which effectively inhibits beta-hydride elimination.
Enantioselective Palladium-Catalyzed Diamination of Alkenes Using <i>N</i>-Fluorobenzenesulfonimide
作者:Erica L. Ingalls、Paul A. Sibbald、Werner Kaminsky、Forrest E. Michael
DOI:10.1021/ja4043406
日期:2013.6.19
An enantioselective Pd-catalyzed vicinal diamination of unactivated alkenes using N-fluorobenzenesulfonimide as both an oxidant and a source of nitrogen is reported. The use of Ph-pybox and Ph-quinox ligands afforded differentially protected vicinal diamines in good yields with high enantioselectivities. Mechanistic experiments revealed that the high enantioselectivity arises from selective formation
Palladium-Catalyzed Intramolecular Chloroamination of Alkenes
作者:Forrest E. Michael、Paul A. Sibbald、Brian M. Cochran
DOI:10.1021/ol702922c
日期:2008.3.1
A mild and facile Pd-catalyzed intramolecular chloroamination of unactivated alkenes has been described. This reaction takes place at room temperature and is tolerant of synthetically useful acid-sensitive functional groups. Generally high exo-selectivities are observed in the formation of a variety of 5- and 6-membered rings. This system is unique in its ability to tolerate multidentate ligands on palladium, which opens up the possibility of controlling the absolute sense of induction using a chiral ligand.