Ammonium Chloride → HCID 178420005, compound

Participants

Reaction Conditions

Reaction Steps

Compound 75c (54.9 mg, 0.114 mmol) NH4Cl (9.20 mg, 0.172 mmol), and NaN3 (11.2 mg, 0.172 mmol) were placed in an 8 mL vial equipped with a stir bar and then the vial was evacuated and backflushed with Argon gas. Dry DMF (1 mL) was added via syringe and then the mixture was stirred at 120° C. for 2 h. The reaction was cooled to rt, diluted with water (5 mL), and adjusted to pH 2 with 2M HCl. The precipitate was collected by filtration and then the solid was washed with water (2×5 mL). The solid was dissolved in a mixture of DCM (20 mL) and MeOH (10 mL), dried over Na2SO4, and filtered. The solvent was removed under reduced pressure. The residue was triturated with MeOH (5 mL) and the solid was collected by filtration. The residual solvent was removed under reduced pressure to afford the title compound 70. 1H-NMR (400 MHz, DMSO-d6) δ (ppm): 8.98 (s, 1H), 8.30 (s, 2H), 8.17 (d, J=8.6 Hz, 1H), 8.07 (s, 1H), 7.89 (d, J=7.8 Hz, 1H), 7.86 (d, J=8.3 Hz, 1H), 7.66 (t, J=7.6 Hz, 1H), 7.59 (s, 1H), 7.48 (t, J=7.5 Hz, 1H), 7.43 (d, J=8.6 Hz, 1H), 4.68 (s, 2H), 4.15-4.27 (m, 4H), 3.69-3.75 (m, 4H). Mass Spectrum (LCMS, ESI pos.) Calcd. for C26H22N10OS: 523.2 (M+H). found: 523.3.

Provenance & Evidence