Ammonium Chloride → HCID 121447882, compound

Participants

Reaction Steps

Compound U (26 mg, 0.062 mmol, 1.0 eq), ammonium chloride (6.6 mg, 0.12 mmol, 2.0 eq), (1-[bis(dimethylamino)methylene]-1H-1,2,3-triazolo[4,5-b]pyridinium 3-oxid hexafluorophosphate) (28 mg, 0.074 mmol, 1.2 eq) and N,N-diisopropylethylamine (43 μL, 0.25 mmol, 4.0 eq) were dissolved in DMF (0.5 mL) and stirred overnight. The reaction was diluted with ethyl acetate and washed with water (2×). The aqueous phase was back extracted with ethyl acetate and the combined organics were dried (MgSO4), filtered and concentrated in vacuo. Purification by reverse phase chromatography afforded 7.0 mg (27%) of the title compound as white solid. 1H NMR (400 MHz, DMSO-d6) δ 9.21 (d, J=4.4 Hz, 1H), 8.48-8.45 (m, 3H), 7.76-7.72 (m, 3H), 7.67 (dt, J=7.8, 1.7 Hz, 1H), 7.58 (d, J=4.4 Hz, 1H), 7.51 (t, J=8.7 Hz, 2H), 7.35 (dd, J=7.7, 4.9 Hz, 1H), 6.81 (d, J=14.0 Hz, 1H), 4.41 (s, 2H), 2.83 (s, 3H); ES-MS [M+1]+: 421.2.

Provenance & Evidence