Iridium-Catalyzed Regio- and Enantioselective Allylation of Ketone Enolates
作者:Timm Graening、John F. Hartwig
DOI:10.1021/ja0566275
日期:2005.12.1
regioselectivities and enantioselectivities (91-96% ee). The combination of CsF and ZnF2 was shown to promote this reaction and suppress the formation of diallylation byproducts. In addition, iridium complexes derived from simple phosphoramidite ligands were shown to catalyze this reaction with excellent selectivities, and spectroscopic data show that a cyclometalated Ir precatalyst is formed in situ. This process
Tandem Rh-catalysis: decarboxylative β-keto acid and alkyne cross-coupling
作者:Faben A. Cruz、Zhiwei Chen、Sarah I. Kurtoic、Vy M. Dong
DOI:10.1039/c6cc02522f
日期:——
Herein, we describe a regioselective Rh-catalyzed decarboxylative cross-coupling of [small beta]-keto acids and alkynes to access branched [gamma],[small delta]-unsaturated ketones. Rh-hydride catalysis enables the isomerization of an alkyne to generate a metal-allyl...