Potassium Carbonate → 2-(4-(2-(1-isopropyl-1H-1,2,4-triazol-5-yl)-5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepin-9-yl)piperidin-1-yl)-N,N-dimethylacetamide

Participants

Reaction Steps

To a suspension of 2-(2-isopropyl-2H-[1,2,4]triazol-3-yl)-8-piperidin-4-yl-4,5-dihydro-6-oxa-1,3a-diaza-benzo[e]azulene trifluoroacetic acid salt (300 mg, 0.61 mmol) in THF (5 mL) was added potassium carbonate (295 mg, 2.13 mmol) and 2-chloro-N,N-dimethyl-acetamide (82 mg, 0.67 mmol). The reaction was stirred for 4 hours before being diluted with DCM and the mixture washed with water (2×30 mL), dried (MgSO4) and concentrated in vacuo. The resultant residue was purified by flash column chromatography (SiO2, gradient 0-5% MeOH in DCM). The resultant material was triturated with diethyl ether then petroleum ether to give 278 as a white solid (85 mg, 0.17 mmol, 29%). LCMS: RT=2.72 min, [M+H]+=464. 1H NMR δ (ppm) (DMSO-d): 8.28 (1H, d, J=8.29 Hz), 7.86 (1H, d, J=0.64 Hz), 7.85 (1H, s), 7.01 (1H, dd, J=8.35, 1.78 Hz), 6.86 (1H, d, J=1.73 Hz), 5.89-5.79 (1H, m), 4.48-4.41 (4H, m), 3.10 (2H, s), 3.00 (3H, s), 2.89 (2H, d, J=10.79 Hz), 2.77 (3H, s), 2.11 (2H, dd, J=12.35, 10.20 Hz), 1.71 (2H, d, J=12.52 Hz), 1.61 (2H, td, J=12.15, 3.73 Hz), 1.44 (6H, d, J=6.60 Hz). 1H obscured by solvent.

Provenance & Evidence