Silver-Catalyzed Aerobic Oxidative Decarboxylative Coupling of Arylpropiolic Acids with<i>H</i>-Phosphine Oxides: Mild and Facile Synthesis of β-Oxophosphine Oxides
作者:Yao-Fu Zeng、Dong-Hang Tan、Wen-Xin Lv、Qingjiang Li、Honggen Wang
DOI:10.1002/ejoc.201500587
日期:2015.7
A silver-catalyzedoxidativedecarboxylativecoupling reaction of arylpropiolicacids with H-phosphine oxides by using air as the terminal oxidant was developed. The reaction proceeds smoothly under mild conditions to give β-oxophosphineoxides in moderate to good yields. Preliminary mechanistic studies were conducted.
two: α‐Diazocarbonyl compounds display a diverse pattern of reactivity upon palladium‐catalyzed reaction with esters. Esters bearing an alkynyl group on the carbonyl carbon atom lead to two different CC bonds at the same carbon atom in a single operation through decarboxylation and migratory insertion, whereas aromatic and benzylic acid derivatives afford aromatic and benzylic esters bearing an O‐substituted