Hexahydro-1,4-diazepine → HCID 10109988, compound

Participants

Reaction Steps

Prepared from 2,3-dimethoxy-6-methyl-7-nitro-quinoxaline-5-carbonyl chloride (13) 250 mg (0.80 mmol) and homopiperazine 160 mg (1.60 mmol). Reaction was continued for 30 hours, and the crude product was eluted through a flash column (8% methanol in chloroform), 260 mg (87%), mp 141-143° C.; 1H NMR (CDCl3): δ 8.29 (s, 1H), 4.03 (s, 3H), 3.93 (br s, 7H), 3.02 (br s, 2H), 2.82 (t, 2H, J=5.4, J=5.6 Hz), 2.54 (s, 3H), 1.88 (t, 2H, J=5.6, 5.4 Hz), 1.79 (bs, 1H); MS (APCI): m/z 376 (M+H).

Provenance & Evidence