Trifluoroacetic acid → HCID 18697923, compound

Participants

Reaction Steps

A solution of 4-(2-(4-tert-butoxycarbonylpiperazin-1-yl)pyrid-5-yl)-N-(9-ethylcarbazol-3-yl)-2-pyrimidineamine (65 mg, 0.12 mmol) in dichloromethane (2 ml) was treated with trifluoroacetic acid (2 ml). After 2h the mixture was evaporated and the residue reconcentrated five times from dichloromethane then three times from diethyl ether. The residue was subjected to column chromatography (silica, 0.88 ammonia solution-methanol-dichloromethane 1:5:94) to afford the title compound (28 mg) as a pale yellow solid m.p. 131-137°. δH (d6DMSO) 1.31 (3H, t, J 7.1 Hz), 2.80 (4H, m), 3.56 (4H, m), 4.42 (2H, q, J 7.1 Hz), 6.93 (1H, d, J 9.1 Hz), 7.17 (1H, m), 7.25 (1H, d, J 5.3 Hz), 7.43 (1H, m), 7.55 (2H, m), 7.76 (1H, dd, J 2.9, 8.8 Hz), 8.03 (1H, d, J 7.4 Hz), 8.27 (1H, dd, J 2.1, 9.1 Hz), 8.41 (1H, d, J 5.3 Hz), 8.57 (1H, d, J 1.8 Hz), 8.95 (1H, d, J 2.1 Hz) and 9.45 (1H, s).

Provenance & Evidence