Ruthenium-Catalyzed Ortho C–H Arylation of Aromatic Nitriles with Arylboronates and Observation of Partial Para Arylation
作者:Yuta Koseki、Kentaroh Kitazawa、Masashi Miyake、Takuya Kochi、Fumitoshi Kakiuchi
DOI:10.1021/acs.joc.6b02623
日期:2017.7.7
Ruthenium-catalyzed C–H arylation of aromatic nitriles with arylboronates is described. The use of RuH2(CO)P(4-MeC6H4)3}3 as a catalyst provided higher yields of the ortho arylation products than the conventional RuH2(CO)(PPh3)3 catalyst. The arylation takes place mostly at the ortho positions, but unprecedented para arylation was also partially observed to give ortho,para diarylation products. In
描述了钌催化芳香腈与芳基硼酸酯的CH芳基化反应。与常规RuH 2(CO)(PPh 3)3催化剂相比,使用RuH 2(CO)P(4-MeC 6 H 4)3 } 3作为催化剂可提供更高的邻芳基化产物收率。芳基化主要发生在邻位,但也观察到部分空前的芳基化产生邻位,对二芳基化产物。除了C–H键断裂以外,还发现氰基还充当芳基醚中C–O键断裂的导向基团。