Amphiphilic Viologen: Electrochemical Generation of Organic Reductant and Pd-Catalyzed Reductive Coupling of Aryl Halides in Water
作者:Manabu Kuroboshi、Hideo Tanaka、Takashi Yamamoto
DOI:10.1055/s-0032-1317857
日期:——
Electroreduction of 1,1′-bis(methoxyethoxyethoxyethyl)-4,4′-bipyridinium tosylate generated amphiphilic organic reductants, which promoted the Pd-catalyzed reductive coupling of aryl bromides in water to give the corresponding biaryls. The yields and selectivity of biaryls depended on the length of ethyleneoxy groups and substituents of the aryl bromides.
1,1'-双(甲氧基乙氧基乙氧基乙基)-4,4'-联吡啶鎓甲苯磺酸盐的电还原生成两亲性有机还原剂,促进了钯催化的芳基溴化物在水中的还原偶联,得到相应的联芳基化合物。联芳基的产率和选择性取决于亚乙基氧基的长度和芳基溴化物的取代基。