Potassium Carbonate → 6-(3-fluorophenyl)-4,4-dimethyl-3,4-dihydroquinoline-2(1H)-one

Participants

Reaction Steps

Prepared by coupling 3-fluorophenylboronic acid with an equivalent amount of 6-bromo-4,4-dimethyl-3,4-dihydro-1H-quinolin-2-one using a catalytic amount of tetrakis(triphenylphosphine)palladium(0) with overnight refluxing in toluene containing an equivalent amount of potassium carbonate dissolved in water. Work up in the usual manner followed by recrystallization from ethanol gave a grey solid: mp 190-192° C. 1H-NMR (DMSO-d6) δ 10.27 (s, 1H), 7.57 (s, 1H), 7.50 (m, 4H), 7.15 (m, 1H), 6.95 (d, 1H J=8.2 Hz), 2.39 (s, 2H), 1.29 (s, 6H); MS (APCI (−)) m/z 268 [M−H]− Anal. Calc. For C17H16FNO 0.25 H2O: C, 74.57, H, 6.07, N, 5.12. Found: C, 74.86, H, 5.97, N 5.06.

Provenance & Evidence