Catalytic Conjugate Addition of Allyl Groups to Styryl-Activated Enones
作者:Joshua D. Sieber、Shubin Liu、James P. Morken
DOI:10.1021/ja067878w
日期:2007.2.1
Conjugateaddition of pinacolato(allyl)boron to benzylidenealkylidene ketones is remarkably facile when catalyzed by Ni(0) and Pd(0) complexes. Simpleenones are inert to the reaction conditions, suggesting a significant activating effect by the auxiliary benzylidene unit. A comparison of different catalysts and substrates is provided, as is a mechanistic rationale, and an example of asymmetric catalysis
One-pot Pd-catalyzed hydrostannation/Stille reaction with acid chlorides as the electrophiles
作者:Kyoungsoo Lee、William P. Gallagher、Elli A. Toskey、Wenzheng Chong、Robert E. Maleczka
DOI:10.1016/j.jorganchem.2005.11.041
日期:2006.4
sequence amenable to the employment of acid chloride electrophiles has been developed. In this protocol, palladium mediated alkyne hydrostannations using Me3SnF/PMHS as an in situ trimethyltinhydride source are followed by the addition of the acid chloride to afford a variety of α,β-unsaturated ketones in a single pot.