Regioselective synthesis of bioactive spiro heterocyclic compounds containing both indoline and quinolone moieties by aryl radical cyclization
作者:K. C. Majumdar、N. Kundu
DOI:10.1002/jhet.101
日期:2009.5
The tin hydride-mediated arylradicalcyclization of a number of 4-(2′-bromo-N-methylanilino)methyl-1-alkylquinolin-2(1H)-ones under mild neutral condition afforded 1-alkyl-3,4-dihydroquinolin-2(1H)-one-4-spiro-3′-(1-methylindolines) in excellent yield. The starting materials, amines were derived from 4-bromomethyl-N-methyl quinolin-2(1H)-ones and 2-bromo-N-methyl anilines by refluxing in acetone in