Dimethylamine → HCID 11395566, compound

Participants

Reaction Steps

Part A. 4-[1-(4-Methoxy-phenyl)-3-methyl-7-oxo-1,4,5,7-tetrahydro-pyrazolo[3,4-c]pyridin-6-yl]-benzonitrile (0.250 g, 0.98 mmol) was dissolved in 1:1 MeOH/CHCl3 (30 mL). Hydrogen chloride gas was bubbled through the solution for 15 min, and it was then tightly capped and sealed. The reaction was stirred overnight at rt and then concentrated to dryness. The crude intermediate was dissolved in methanol (30 mL) and 2M dimethylamine (5.23 mL, 10.5 mmol) was added. The reaction was tightly capped and sealed and stirred overnight at rt. The reaction was concentrated and purified by reverse phase HPLC and freeze-dried to yield 4-[1-(4-methoxy-phenyl)-3-methyl-7-oxo-1,4,5,7-tetrahydro-pyrazolo[3,4-c]pyridin-6-yl]-N,N-dimethyl-benzamidine (0.255 g, 71%): 1H NMR (CHCl3) δ 9.66 (s, 0.5H), 8.73 (s, 0.5H), 7.51–7.38 (m, 6H), 6.91 (d, j=8.8 Hz, 2H), 4.13(t, j=6.6 Hz, 2H), 3.80 (s, 3H), 3.33 (s, 3H), 3.06 (s, 3H), 2.96 (t,j=6.4 Hz, 2H), 2.35 (s, 3H) ppm; Mass Spec 404.3 (M+H)+.

Provenance & Evidence