Ammonia → Thiourea, [4-(pentyloxy)phenyl]-

Participants

Reaction Steps

4-Pentyloxyaniline (370 ml, 2 mmol) in dichloromethane (3 ml) is added to a solution of 1,1′-thiocarbonyldiimidazole (537 mg, 3 mmol) in dichloromethane (5 ml) at room temperature and the mixture is stirred at room temperature for 30 minutes. 2 N Ammonia in methanol (30 ml) is added to the solution, and the solution is stirred for additional 1 hour at room temperature. The solvent is removed, and the product extracted with ethylacetate and H2O. The crude product is recrystallized from dichloromethane and hexane to afford the thiourea as a white solid. 1H NMR (300 Hz, CDCl3) δ 7.92 (s, 1H, NH), 7.15 (d, J=8.4 Hz, 2H, Aryl H), 6.92 (d, J=8.4 Hz, 2H, Aryl H), 6.0 (br s, 2H, NH2), 3.95 (t, J=6.6 Hz, 2H, CH2), 1.79 (m, 2H, CH2), 1.44-1.38 (m, 4H, (CH2)2), 0.94 (t, J=7.2 Hz, 3H, CH3). MS (APCI) m/z 239 [M+H]±.

Provenance & Evidence