N-Methyl-4-(trifluoromethyl)aniline → N'-[4,6-bis(2,2,2-trifluoroethoxy)pyrimidin-2-yl]-N-methyl-N-[4-(trifluoromethyl)phenyl]thiourea

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Reaction Steps

To a solution of 4,6-bis(2,2,2-trifluoroethoxy)pyrimidin-2-yl isothiocyanate (6.87 mmol) in CH2Cl2 (10 mL) was added N-methyl-4-trifluoromethylaniline (6.87 mmol) and the resulting solution was stirred at room temperature. After 18 h the solvent was evaporated and the crude material purified by chromatography (silica, hexane/EtOAc) to afford 131 as a yellow solid (2.15 g, 62% yield): m.p. 109-111° C.; 1H NMR (CDCl3) δ 7.76 (d, 2H, J=8.5), 7.46 (d, 3H, J=8.5 Hz), 5.96 (s, 1H), 4.77-4.68 (q, 4H, J=8.5 Hz); ESI/MS 509 (M+H), 507 (M−H).

Provenance & Evidence