Ammonia → 5-[2-(Difluoromethyl)-4-methoxy-1h-benzimidazol-1-yl]-7-(4-morpholinyl)-3-(4-piperidinyl)-3h-[1,2,3]triazolo[4,5-d]pyrimidine

Participants

Reaction Steps

Reaction of the above carbamate (158 mg, 0.270 mmol) with an excess of TFA (2 mL) in CH2Cl2 (10 mL) at room temperature for 2 hrs, followed by treatment with aq. NH3 gave 5-[2-(difluoromethyl)-4-methoxy-1H-benzimidazol-1-yl]-7-(4-morpholinyl)-3-(4-piperidinyl)-3H-[1,2,3]triazolo[4,5-d]pyrimidine (112 mg, 85%), which was used in the next step without further purification: 1H NMR (CDCl3) δ 7.83 (dd, J=8.4, 0.4 Hz, 1H), 7.46 (t, JHF=53.6 Hz, 1H), 7.38 (t, J=8.2 Hz, 1H), 6.83 (d, J=7.9 Hz, 1H), 4.87 (tt, J=11.7, 4.2 Hz, 1H), 4.80 (br s, 2H), 4.15 (br s, 2H), 4.07 (s, 3H), 3.92 (d, J=15.0 Hz, 4H), 3.34 (m, 2H), 2.88 (dt, J=12.7, 2.5 Hz, 2H), 2.38 (dq, J=12.0, 4.2 Hz, 2H), 2.18 (m, 2H).

Provenance & Evidence