Palladium-catalyzed carbonylative addition of aryl bromides to arylalkynes: a simple and efficient method for chalcone synthesis
作者:Sheng Zhang、Liangguang Wang、Xiujuan Feng、Ming Bao
DOI:10.1039/c4ob01263a
日期:——
Palladium-catalyzedcarbonylative addition of arylbromides to terminal arylalkynes was carried out to produce chalcones in satisfactory to excellent yields. The unprecedented carbonylation reaction proceeded smoothly under mild conditions in the presence of a simple palladium catalyst system (PdCl2/DPPB/iPr2NEt) in N,N-dimethyl formamide.
进行了钯催化的芳基溴化物羰基加成到末端芳基炔烃上,以令人满意的产率获得了查耳酮。在N,N-二甲基甲酰胺中存在简单的钯催化剂体系(PdCl 2 / DPPB / i Pr 2 NEt)的情况下,在温和条件下,史无前例的羰基化反应顺利进行。
Transition-Metal-Free Catalytic Formal Hydroacylation of Terminal Alkynes
Although hydroacylation is a very useful reaction for producing ketonesfromaldehydes with 100% atom efficiency, classical Rh-catalyzed hydroacylation presents several problems, including the need for transition metal catalysts, unwanted decarbonylation of aldehydes, and difficulty in regioselectivity control. However, formal hydroacylation utilizing the nucleophilicity of terminal alkynes can avoid