Palladium-catalyzed cyclization of bromoenynamides to tricyclic azacycles: synthesis of trikentrin-like frameworks
作者:Craig D. Campbell、Rebecca L. Greenaway、Oliver T. Holton、Helen A. Chapman、Edward A. Anderson
DOI:10.1039/c3cc45634j
日期:——
Palladium-catalyzed cascade cyclization of bromoenynamides equipped with an additional alkyne or ynamide substituent affords azatricyclic products. Using 5- to 7-membered ring tethers, this chemistry offers a regiospecific route to highly-functionalized azacycles. Elaboration to the trikentrin B skeleton is achieved from the arylsilane cyclization products.