Dimethylamine → (2-{3-[2-(2-Isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulen-8-yl]-azetidine-1-sulfonyl}-ethyl)-dimethyl-amine

Participants

Reaction Steps

To a suspension of 8-(1-ethenesulfonyl-azetidin-3-yl)-2-(2-isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene (75 mg, 0.17 mmol) in IMS (2 mL) was added dimethylamine (2M in MeOH, 158 μL, 0.32 mmol) and the reaction mixture was stirred for 72 hours. The mixture was concentrated in vacuo to low volume and partitioned between DCM and water. The layers were separated and the organic layer was washed with water followed by brine, dried (Na2SO4) and concentrated in vacuo. The resultant residue was combined with a previous batch of the desired compound and purified by flash chromatography (SiO2, 0-2% MeOH in DCM) to give 455 as a white solid (43 mg, 34%). LCMS: RT=8.51 min, [M+H]+=503. 1H NMR δ (ppm) (CDCl3): 8.36 (1H, d, J=8.20 Hz), 7.90 (1H, s), 7.16 (1H, dd, J=8.24, 1.92 Hz), 7.03 (1H, d, J=1.88 Hz), 5.93-5.83 (1H, m), 4.39 (2H, t, J=5.04 Hz), 4.26 (2H, t, J=8.23 Hz), 4.10 (2H, t, J=7.33 Hz), 3.81-3.74 (1H, m), 3.40 (2H, t, J=5.05 Hz), 3.22-3.14 (2H, m), 2.81 (2H, t, J=7.47 Hz), 2.29 (6H, s), 1.61 (6H, d, J=6.63 Hz)

Provenance & Evidence