Pd-Catalyzed Carbonylative Conjugate Addition of Dialkylzinc Reagents to Unsaturated Carbonyls
作者:Daniel W. Custar、Hai Le、James P. Morken
DOI:10.1021/ol1013476
日期:2010.9.3
The Pd-catalyzed addition of organozinc reagents to unsaturated carbonyls in the presence of carbon monoxide provides 1,4-diketones in good yield. The reaction was studied with a number of substituted cyclic and acyclic ketones as well as α,β-unsaturated aldehydes.
Introduction of Different Groups to α- and β-Positions of Cyclic α,β-Unsaturated Ketones via [2π + 2π] Photocycloaddition with Ketene Silyl Acetals Followed by Electrode Reaction
作者:Michiharu Mitani、Yosinari Osakabe、Junji Hamano
DOI:10.1246/cl.1994.1255
日期:1994.7
The photoadducts of cyclic conjugated enones with ketene silyl acetals and silyl enol ether were subjected to electrolysis to bring about the oxidative cleavage of the Si-O bond, which induced the collapse of the cyclobutane ring to perform the introduction of the different groups to both positions of the ene moieties of the enones.