Synthesis of 3,4-Disubstituted Isoquinolines via Palladium-Catalyzed Cross-Coupling of 2-(1-Alkynyl)benzaldimines and Organic Halides
作者:Guangxiu Dai、Richard C. Larock
DOI:10.1021/jo026294j
日期:2003.2.1
The palladium-catalyzed cross-coupling of readily available N-tert-butyl-2-(1-alkynyl)benzaldimines and aryl, allylic, benzylic, alkynyl halides, as well as a vinylic halide, provides a valuable new route to 3,4-disubstituted isoquinolines with aryl, allylic, benzylic, 1-alkynyl, and vinylic substituents, respectively, in the 4-position. The reaction appears to require an aryl group on the end of the
易于催化的N-叔丁基-2-(1-炔基)苯甲二胺与芳基,烯丙基,苄基,炔基卤化物以及乙烯基卤化物的钯催化交叉偶联为3,4提供了一条有价值的新途径-双取代的异喹啉在4-位分别具有芳基,烯丙基,苄基,1-炔基和乙烯基取代基。该反应似乎需要在距亚胺官能团最远的乙炔末端上的芳基。优化了反应条件,并获得了相当好的收率。