Effect of oxygen substituents on the regioselectivity of the Pd-assisted biaryl coupling reaction of benzanilides
作者:Takashi Harayama、Yuko Kawata、Chie Nagura、Tomonori Sato、Taeko Miyagoe、Hitoshi Abe、Yasuo Takeuchi
DOI:10.1016/j.tetlet.2005.06.167
日期:2005.9
This study investigated the effect of oxygen substituents in the benzoyl part of N-(2-iodophenyl)benzamide on the coupling position in its Pd-assisted biaryl coupling reaction. Benzamide with methylenedioxy and acyloxy groups yielded the ortho-product formed predominantly by connection to a more hindered carbon. The mechanism is discussed from the perspectives of both steric and coordinated effects
本研究研究了N-(2-碘苯基)苯甲酰胺的苯甲酰基部分中的氧取代基对其Pd辅助联芳基偶联反应中偶联位置的影响。具有亚甲基二氧基和酰氧基的苯甲酰胺产生的邻位产物主要是与更受阻的碳原子相连而形成的。从空间效应和协同效应的角度讨论了该机制。