Ammonium Chloride → 1-[2-(3-Cyanobenzyloxy)-5-fluoropyrimidin-4-yl]-3-propylthiourea

Participants

Reaction Steps

To a magnetically stirred mixture of 3-(4-amino-5-fluoropyrimidin-2-yloxymethyl)-benzonitrile (0.075 g, 0.31 mmol) and propylisothiocyanate (0.047 mL, 0.46 mmol) in dry DMF (1.5 mL) was added LiHMDS (1.0 M in THF, 0.31 ml, 0.31 mmol). The vial was capped and reaction was stirred for 8 h. Saturated aq NH4Cl (3 ml) was added to the vial and the mixture was stirred for 4 h. The heterogeneous mixture was filtered and the solid was washed with hot water, washed with hexanes, and dried under vacuum to give the title compound (0.055 g, 52%) as a pale-yellow solid: mp 163-165° C.; 1H NMR (400 MHz, DMSO-d6) δ 10.77 (s, 1H), 10.38 (s, 1H), 8.47 (d, J=2.7 Hz, 1H), 7.90 (s, 1H), 7.82 (d, J=7.5 Hz, 1H), 7.78 (d, J=8.1 Hz, 1H), 7.62 (t, J=7.7 Hz, 1H), 5.42 (s, 2H), 3.55 (dd, J=12.4, 6.8 Hz, 2H), 1.65-1.59 (m, 2H), 0.95 (t, J=7.5 Hz, 3H): HPLC-MS (ESI) m/z 346.3 (M+H)+, 344.2 (M−H)−.

Provenance & Evidence