4-Bromo-1,1,1-trifluorobutane → 1-(5-Acetyl-4-methylthiazol-2-yl)-3-(4,4,4-trifluorobutyl)imidazolidin-2-one

Participants

Reaction Steps

Following the procedure as describe in Preparation 16, making variations as required to replace ethyl 4-methyl-2-(5-oxo-1H-1,2,4-triazol-4(5H)-yl)thiazole-5-carboxylate with 1-(5-acetyl-4-methylthiazol-2-yl)imidazolidin-2-one to react with 4-bromo-1,1,1-trifluorobutane instead of bromomethyl-2,2-difluorocyclopropane, the title compound was obtained as a yellow solid in 60% yield: mp 108-110° C.; 1H NMR (300 MHz, DMSO-d6) δ 3.97 (t, J=9.0 Hz, 2H), 3.57-3.47 (m, 2H), 3.28 (t, J=9.0 Hz, 2H), 2.50 (s, 3H), 2.40 (s, 3H), 2.32-2.19 (m, 2H), 1.76-1.62 (m, 2H); 13C NMR (75 MHz, DMSO-d6) δ 155.9, 155.8, MS (ES+) m/z 336.9 (M+1).

Provenance & Evidence