Ammonium Chloride → HCID 86713582, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 3-(2,6-dichloro-3,5-dimethoxyphenyl)-1-methyl-7-(2-methyl-6-nitrophenylamino)-3,4-dihydropyrimido[4,5-d]pyrimidin-2(1H)-one (290 mg, 0.56 mmol) in ethanol (10 mL) and water (2 mL) was stirred at 70° C. for 20 mins before iron powder (320 mg, 5.60 mmol) and ammonium chloride (250 mg, 2.79 mmol) were added. The reaction mixture was stirred at 70° C. for another 6 h. LCMS showed the reaction was completed. The solid was filtered off, and the filtrate was concentrated. The residue was dissolved by ethyl acetate (30 mL), washed with water and brine, dried over sodium sulfate, filtered and concentrated. The residue was purified by Prep-HPLC to give the title compound (27 mg, 10%) as a white solid. MS (ES+) C22H22Cl2N6O3 requires: 488, 490. Found: 489, 491 [M+H]+. 1H-NMR (500 MHz, CDCl3) δ ppm 7.89 (s, 1H), 7.04 (t, 1H, J=8.0 Hz), 6.69 (d, 2H, J=7.5 Hz), 6.60 (s, 1H), 4.53 (s, 2H), 3.94 (s, 6H), 3.34 (s, 3H), 2.24 (s, 3H).

Provenance & Evidence