1-Methylpiperazine → HCID 21099462, compound

Participants

Reaction Conditions

Reaction Steps

2-[(E)-2-(2,4-Difluorophenyl)vinyl]-5-[(2-fluorophenyl)sulfonyl]pyridine (Example 1, 30 mg, 0.08 mmol) and 1-methylpiperazine (22 μL, 0.20 mmol) were combined in acetonitrile (0.5 mL) and heated to 100° C. for 5 minutes in a Smith synthesiser microwave reactor. Further 1-methylpiperazine (44 μL, 0.40 mmol) was added and the reaction heated to 150° C. for 10 minutes, then to 170° C. for 10 minutes. The reaction mixture was diluted with ethyl acetate, washed with 1N aqueous hydrochloric acid and brine, dried over MgSO4 and evaporated in vacuo to give the title compound which was dissolved in ethyl acetate and treated with ethereal HCl to give the hydrochloride salt (10 mg, 25%). δH (500 MHz, MeOD) 9.15 (1H, d, J 2.1), 8.30 (1H, dd, J=1.5, 7.9), 8.25 (1H, dd, J=2.3, 8.4 Hz), 7.96 (1H, d, J=16.3 Hz), 7.84–7.76 (3H, m), 7.56 (1H, td, J=1.1, 7.6 Hz), 7.50 (1H, d, J=7.9 Hz), 7.37 (1H, d, J=16.2 Hz), 7.07–7.03 (2H, m), 3.53 (2H, d, J=12.2 Hz), 3.21–3.14 (2H, m), 3.10 (4H, d, J=6.6 Hz), 3.03 (3H, s); m/z (ES+) 456 [MH+].

Provenance & Evidence