反应详情

1-(5-Fluoro-2-nitro-phenyl)-piperidine (100 mg, 0.44 mmol) was treated with N-methylpiperizine (3 mL) and heated to 80° C. overnight. The reaction was diluted with EtOAc (10 mL), washed with water (2×10 mL), dried (Na2SO4) and concentrated in vacuo to afford 118 mg (88%) of 1-methyl-4-(4-nitro-3-piperidin-1-yl-phenyl)-piperazine as an oil. The 1-methyl-4-(4-nitro-3-piperidin-1-yl-phenyl)-piperazine (22 mg, 0.07 mmol) was stirred with 13 mg 5% Pd—C in 1 mL of MeOH under H2 for 2 h. The mixture was filtered through SiO2, eluting with 10% MeOH—CHCl3, and the solvent was concentrated in vacuo to give 17 mg (86%) of the title compound as a white solid. Mass spectrum (ESI, m/z): Calcd. for C16H26N4, 275.22 (M+H), found 275.2.

1. filtrationThe mixture was filtered through SiO2
2. washeluting with 10% MeOH—CHCl3
3. concentrationthe solvent was concentrated in vacuo