2-Methylpropan-2-olate → 2-[2-(2,4-Difluoro-phenyl)-2H-[1,2,4]triazol-3-yl]-9-[4-(2,2,2-trifluoro-ethyl)-piperazin-1-yl]-4,5-dihydro-6-oxa-1-thia-10-aza-benzo[e]azulene

Participants

Reaction Conditions

Reaction Steps

A mixture of 9-Chloro-2-[2-(2,4-difluoro-phenyl)-2H-[1,2,4]triazol-3-yl]-4,5-dihydro-6-oxa-1-thia-10-aza-benzo[e]azulene (300 mg, 0.72 mmol), Pd(OAc)2 (20 mg, 0.1 mmol), 1-(2,2,2-Trifluoro-ethyl)-piperazine (175 mg, 1.44 mmol), X-phos (70 mg, 0.144 mmol), tert-butoxide (140 mg, 1.44 mmol) in dioxane (2 mL) was bubbled N2 for 10 min and then stirred at 125° C. for 9 min under the irradition of microwave. The mixture was filtered over ceilite. The filtrate was concentrated to dryness and purified by pre-HPLC to afford 110 mg of 309. (yield=28%). 1H NMR (CDCl3, 400 MHz): δ8.08 (s, 1H), 7.57-7.51 (m, 1H), 7.16-7.06 (m, 4H), 6.52 (d, J=8.8 Hz, 1H), 4.25-4.23 (m, 2H), 3.47-3.44 (m, 4H), 3.12-3.02 (m, 4H), 2.80-2.77 (m, 4H). LC-MS (ESI): m/z=549 [M+H]+

Provenance & Evidence