Triethylamine → N-isopropyl-2-(4-(2-(1-isopropyl-3-methyl-1H-1,2,4-triazol-5-yl)-5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepin-9-yl)piperidin-1-yl)acetamide

Participants

Reaction Steps

To a suspension of 2-(2-isopropyl-5-methyl-2H-[1,2,4]triazol-3-yl)-8-piperidin-4-yl-4,5-dihydro-6-oxa-1,3a-diaza-benzo[e]azulene hydrochloride (150 mg, 0.35 mmol) in DCM (2 mL) was added triethylamine (107 μL, 0.77 mmol). The resultant mixture was stirred for 10 minutes before the addition of 2-chloro-N-isopropyl-acetamide (52 mg, 0.38 mmol) and tetrabutylammonium iodide (13 mg, 0.04 mmol). The reaction was stirred at RT for 4 days before the reaction was washed with sodium hydrogen carbonate solution (sat. aq.). The aqueous phase was extracted with 10% MeOH in DCM (×3) and the combined organic layers dried (Na2SO4) then concentrated in vacuo. The resultant residue was purified by flash column chromatography (SiO2, gradient 0-10% MeOH in DCM) affording 277 (88 mg, 0.18 mmol, 51%). LCMS: RT=2.85 min, [M+H]+=492. 1H NMR δ (ppm)(CDCl3): 8.43 (1 H, d, J=8.29 Hz), 7.59 (1 H, s), 7.01 (1 H, dd, J=8.34, 1.82 Hz), 6.97 (1 H, s), 6.89 (1 H, d, J=1.76 Hz), 5.92-5.82 (1 H, m), 4.48-4.44 (2 H, m), 4.42-4.38 (2 H, m), 4.13-4.02 (1 H, m), 3.10-2.85 (4 H, m), 2.58-2.46 (1 H, m), 2.38 (3 H, s), 2.35-2.20 (2 H, m), 1.94-1.84 (2 H, s), 1.81-1.68 (2 H, m), 1.54 (6 H, d, J=6.64 Hz), 1.16 (6 H, d, J=6.55 Hz)

Provenance & Evidence