Hydrochloric Acid → HCID 67441794, compound

Participants

Reaction Steps

To a stirred solution of 33 from the previous step in DCM (15 mL) was added a solution of 4M HCl in 1,4-dioxane (0.44 mL, 1.75 mmol). The reaction mixture (suspension) was stirred at RT for 1 h. The solid was collected by filtration, rinsed with DCM and dried under high vacuum. The residue was suspended in MeOH, concentrated and triturated with a minimum of methanol/water to afford the title compound 34 (136 mg, 0.21 mmol, 60% over 3 steps) as an off-white fluffy solid. 1H NMR (400 MHz, DMSO-d6) δ (ppm): mixture of rotamers, 8.71 (s, 1H), 8.58-8.48 (m, 2H), 8.37 and 8.33 (2 s, 1H), 8.29 and 8.24 (2d, J=8.2 Hz, 1H), 7.86-7.77 (m, 1H), 7.73 (dd, J=13.6, 2.4 Hz, 1H), 7.38 (t, J=9.1 Hz, 1H), 7.20 (bd, J=9.0 Hz, 1H), 6.64 (d, J=5.3 Hz, 1H), 6.57 (d, J=2.5 Hz, 1H), 4.74-4.50 (m, 4H), 3.47 (bs, 4H), 3.24 and 3.21 (2s, 3H), 2.59-2.51 (m, 1H), 0.73-0.58 (m, 2H), 0.50-0.36 (m, 2H). MS (m/z): 646.7 (M+H).

Provenance & Evidence