Methyl vinyl sulfone → 1-[3-(Methyloxy)-4-nitrophenyl]-4-[2-(methylsulfonyl)ethyl]piperazine

Participants

Reaction Conditions

Reaction Steps

To 1-[3-(methyloxy)-4-nitrophenyl]piperazine (0.4 g, 1.74 mmol) in 10 mL of dioxane was added, methyl vinyl sulfone (0.46 g, 4.34 mmol). The mixture was heated to 120° C. for 1 h. The solvent was rotovaped down and the crude product was purified by flash chromatography to give the title compound of step B (0.55 g, 1.6 mmol, 92%). 1H NMR (400 MHz, CDCl3) δ ppm 7.97 (d, J=9.34 Hz, 1H), 6.41 (dd, J=9.34, 2.56 Hz, 1H), 6.31 (d, J=2.38 Hz, 1H), 3.93 (s, 3H), 3.36-3.43 (m, 4H), 3.19 (t, J=6.41 Hz, 2H), 3.03 (s, 3H), 2.92-2.99 (m, 2H), 2.60-2.68 (m, 4H).

Provenance & Evidence