Biphenyl → N-(3-Cyano-6-methoxy-4-oxo-1,4-dihydro-7-quinolinyl)acetamide

Participants

Reaction Conditions

Reaction Steps

An amount of 1 g (0.003 mol) of a mixture of ethyl (E)-3-[3-(acetylamino)-4-methoxyanilino]-2-cyano-2-propenoate and ethyl (Z)-3-[3-(acetylamino)-4-methoxyanilino]-2-cyano-2-propenoate was added to a stirring solution of biphenyl (16.3 mL, 0.10 mol) and phenyl ether (48.8 mL, 0.30 mol) at 256° C. After stirring for 2 hours at 256° C., the reaction mixture was cooled to room temperature, diluted with diethyl ether (130 mL), filtered, and evaporated to dryness to give a gray solid (0.53 g, 62% yield), mp 305-310° C.; 1H NMR (DMSO-d6) δ 12.80 (s, 1H), 9.58 (s, 1H), 8.62 (s, 1H), 8.58 (m, 1H), 7.52 (s, 1H), 3.97 (s, 3H), 2.20 (s, 3H); HRMS (EI) m/z 257.0793 (M+1).

Provenance & Evidence