1-Methylpiperazine → HCID 86613337, compound

Participants

Reaction Steps

N-(3-(5-(4-methoxyphenyl)pyrimidin-2-ylamino)phenyl)-4-methylpiperazine-1-carboxamide can be prepared by the following procedure. To a solution of N1-(5-(4-methoxyphenyl)pyrimidin-2-yl)benzene-1,3-diamine (0.34 mmol) (From Example 5av) in THF (7 mL) are added diisopropylethylamine (0.75 mmol) and triphosgene (0.10 mmol). After stirring for 30 min at rt, 1-methylpiperazine (1.02 mmol) is added and stirring is continued for 1 h. The reaction is partitioned between dichloromethane and water. The organic layer is washed with brine, dried over magnesium sulfate, filtered and the solvent is removed. The crude product is crystallized from dichloromethane to afford the desired product as a white crystalline solid (50%). 1H NMR (400 MHz, DMSO-d6) δ 9.63 (s, 1H), 8.76 (s, 2H), 8.49 (s, 1H), 7.83 (t, J=2.0 Hz, 1H), 7.64 (d, J=8.4 Hz, 2H), 7.37 (d, J=7.0 Hz, 1H), 7.13 (t, J=8.0 Hz, 1H), 7.05 (d, J=7.0 Hz, 1H), 7.04 (d, J=8.0 Hz, 2H), 3.80 (s, 3H), 3.44 (bs, 4H), 2.33 (bs, 4H), 2.22 (s, 3H). MS (m/z) (M+1)+ 419.2.

Provenance & Evidence