Hydrochloric Acid → HCID 67048272, compound

Participants

Reaction Steps

To a solution of the 375 (140 mg, 0.208 mmol) in DCM (5 ml) was added HCl in dioxane (0.5 ml, 2 mmol, 9.6 eq, 4M in dioxane) and the reaction mixture was stirred for 4 hours. The mixture was diluted with EtOAc, made basic with NaHCO3 solution and extracted with EtOAc/acetone. The organic phase was collected and discarded. The aqueous phase was concentrated and the residue was suspended in a mixture of DCM and acetone. The solution phase was collected, dried with Na2SO4, filtered and concentrated to afford 376 as a beige solid after further trituration with Et2O (yield 8 mg, 7%). 1H NMR (DMSO-d6): 8.67 (s, 1H), 8.56 (s, 1H), 8.47 (d, J=5.28, 1H), 8.27 (s, 1H), 8.19 (d, J=8.02 Hz, 1H), 7.85 (m, 2H), 7.80 (s, 1H), 7.22 (m, 2H), 6.59 (d, J=5.28 Hz, 1H), 3.76 (s, 2H), 3.40 (m, 2H), 3.20 (s, 3H), 2.76 (m, 1H), 2.60 (m, 2H), 0.75 (m, 2H), 0.65 (m, 2H). LRMS(ESI): (calc.) 571.64 (found) 572.58 (MH)+.

Provenance & Evidence