m-Chloroperbenzoic acid → 2-[[3-Methyl-4-(2,2,2-trifluoroethoxy)pyridin-2-yl]methylsulfinyl]-6-fluoro-5-(4-methylpiperazin-1-yl)-1H-benzimidazole

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Reaction Steps

The title compound (0.15 g, 51%) was prepared by the above general procedure using 2-[[3-methyl-4-(2,2,2-trifluoroethoxy)pyridin-2-yl]methylthio]-6-fluoro-5-(4-methylpiperazin-1-yl)-1H-benzimidazole (0.28 g, 0.6 mmol) (obtained in example 20), m-chloroperbenzoic acid (50%, 0.25 g, 0.72 mmol) and chloroform (20 mL). mp 73-74° C.; IR (KBr) 3470, 1080 cm- 1; 1H NMR (CD3OD) δ 2.20 (s, 3H, CH3), 2.50 (s, 3H, CH3), 2.88 (t,J=4.6 Hz, 4H, N(CH2)2), 3.18 (t,J=4.8 Hz, 4H, N(CH2)2), 4.68 (q,J=8.2 Hz, 2H, OCH2CF3), 4.80 (s, 2H, SOCH2), 7.00 (d,J=5.8Hz, 1H), 7.24 (d,J=7.6Hz, 1H), 7.32 (d,J=12.2Hz, 1H), 8.18 (d,J=5.7Hz, 1H); Mass (m/z) 486 (M+ 1).

Provenance & Evidence