Cyclopropylamine → 9-Bromo-5-cyclopropylcarbamoyl-6,7-dihydro-1H, 5H-pyrido[1,2,3-de]quinoxaline-2,3-dione

Participants

Reaction Steps

A procedure similar to that described in Example 5 was carried out with 9-bromo-5-carboxy-6,7-dihydro-1H, 5H-pyrido[1,2,3-de]quinoxaline-2,3-dione (300 mg, 0.92 mmol) and cyclopropylamine (100 μL, 1.0 mmol) to give 310 mg of the title compound (93%): mp 222°~225° C.; 1H NMR (270 MHz, DMSO-d6) δ12.13 (s, 1H), 8.22 (d, 1H, J=4.0 Hz), 7.18 (bs, 1H), 7.16 (bs, 1H), 5.02~5.06 (m, 1H), 2.79 (dm, 1H, J=16.8 Hz), 2.45~2.62 (m, 2H), 2.36 (dm, 1H, J=13.5 Hz), 1.81~1.97 (m, 1H), 0.62 (dm, 2H, J=7.2 Hz), 1.33~1.41 (m, 2H).

Provenance & Evidence