Acetyl chloride → 1-(4-{2-[2-(2,4-Difluoro-phenyl)-2H-[1,2,4]triazol-3-yl]-4,5-dihydro-6-oxa-1-thia-10-aza-benzo[e]azulen-9-yl}-piperazin-1-yl)-ethanone

Participants

Reaction Steps

2-[2-(2,4-Difluoro-phenyl)-2H-[1,2,4]triazol-3-yl]-9-piperazin-1-yl-4,5-dihydro-6-oxa-1-thia-10-aza-benzo[e]azulene (150 mg, 0.3 mmol) was dissolved in THF (20 mL), and DIPEA (155 mg, 1.2 mmol) was added. Acetyl chloride (28 mg, 0.36 mmol) was added dropwise into the solution. And then the reaction mixture was stirred at room temperature for 12 h. The reaction mixture was concentrated in vacuo, and then dissolved in DCM. The mixture was washed by water, dried by Na2SO4, concentrated in vacuo, and purified by prep. TLC (DCM/EtOAc=10:1) to give 348 (42.6 mg, yield: 28%). 1HNMR (DMSO, 400 MHz): δ8.29 (s, 1H), 7.97-7.88 (m, 1H), 7.78 (t, J=2.4 Hz, 1H), 7.47 (t, J=8.4 Hz, 1H), 7.27-7.24 (m, 2H), 6.80 (d, J=8.8 Hz, 1H), 4.20 (s, 1H), 3.63 (s, 4H), 3.33 (s, 4H), 3.11 (s, 2H), 2.07 (s, 3H). ESI-MS: m/z=509 [M+H+]

Provenance & Evidence