Palladium-Catalyzed Decarboxylative<i>sp</i>-<i>sp</i><sup>2</sup>Cross-Coupling Reactions of Aryl and Vinyl Halides and Triflates with α,β-Ynoic Acids using Silver Oxide
作者:Hyunseok Kim、Phil Ho Lee
DOI:10.1002/adsc.200900502
日期:2009.11
Palladium-catalyzed decarboxylative sp-sp2 cross-coupling reactions of aryl and vinyl halides and triflates with α,β-ynoic acids using silver oxide have been developed. A variety of α,β-ynoic acids were readily decarboxylated in the presence of silver oxide and then, generated in situ, silver acetylides were coupled with electrophiles in the presence of a palladium(0) catalyst under neutral conditions
已经开发了使用氧化银的芳族卤化物和乙烯基卤化物以及三氟甲磺酸与钯,α-炔酸的钯催化的脱羧sp-sp 2交叉偶联反应。多种α,β炔酸在氧化银的存在下,容易地脱羧,然后,生成的原位,银乙炔化物加上在中性条件下在钯(0)催化剂的存在下亲电子,产生对称或不对称的二芳基乙炔,芳基烷基乙炔和芳基乙烯基乙炔,收率良好至优异。