N,N-dimethylethene-1-sulfonamide → 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]-azetidin-1-yl}-ethanesulfonic acid dimethylamide

Participants

Reaction Steps

Following the procedure for 320, 8-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 TFA salt 235 and ethenesulfonic acid dimethylamide were reacted. The reaction mixture was concentrated in vacuo and the residue partitioned between DCM and water. The organic phase was washed with water followed by brine, dried (Na2SO4) and concentrated in vacuo. The residue was purified by flash chromatography (SiO2, 2% MeOH in DCM) to give 443 as a beige solid (117 mg, 75%). LCMS: RT=7.69 min, [M+H]+=503. 1H NMR δ (ppm) (CDCl3): 8.31 (1H, d, J=8.17 Hz), 7.89 (1H, s), 7.08 (1H, dd, J=8.21, 1.86 Hz), 6.99-6.96 (1H, m), 5.92-5.83 (1H, m), 4.38 (2H, t, J=5.05 Hz), 3.77 (2H, t, J=6.90 Hz), 3.74-3.64 (1H, m), 3.39 (2H, t, J=5.06 Hz), 3.23 (2H, t, J=6.67 Hz), 3.00-2.92 (4H, m), 2.87 (6H, s), 1.60 (6H, d, J=6.64 Hz)

Provenance & Evidence