1-[3-(2-Methoxy-5-nitrophenoxy)propyl]-4-methylpiperazine → 4-Methoxy-3-[3-(4-methylpiperazin-1-yl)propoxy]aniline

Participants

Reaction Steps

To a solution of 1-[3-(2-methoxy-5-nitro-phenoxy)-propyl]-4-methyl-piperazine (2.5 g, 8.1 mmol) in 25 mL of iso-propanol was added 10% Pd-C (0.25 g, 10 wt. %). This mixture was shaken under 35-40 psi of hydrogen in a Parr shaker until hydrogen uptake ceased. The reaction mixture was purged with nitrogen and filtered through celite. The resulting solution was concentrated in vacuo to give the crude 4-methoxy-3-[3-(4-methyl-piperazin-1-yl)-propoxy]-phenylamine as a yellow oil which was used directly in the coupling step described below. 1H NMR (300 MHz, CDCl3) δ 6.71 (d, J=8 Hz, 1H), 6.33 (d, J=2.4 Hz, 1H), 6.23 (dd, J=2.4, 8 Hz, 1H), 4.05 (t, J=8 Hz, 2H), 3.80 (s, 3H), 2.53 (m,10H), 2.30 (s, 3H), 2.02 (m, 2H).

Provenance & Evidence