m-Chloroperbenzoic acid → HCID 13749938, compound

Participants

Reaction Steps

To a solution of 2-[3-methyl-4-(2,2,3,3,3-pentafluoropropoxy)pyrid-2-yl]methylthiobenzimidazole (2.2 g) in chloroform (20 ml) was added dropwise under ice-cooling over a period of 30 minutes m-chloroperbenzoic acid (1.3 g) dissolved in chloroform (15 ml). The solution was washed with a saturated aqueous solution of sodium hydrogen carbonate, then dried on magnesium sulfate, and concentrated. The residue was chromatographed on a column of silica gel (50 g), eluted with ethyl acetate, and then recrystallized from acetone-isopropyl ether to give 1.78 g of 2-[3-methyl-4-(2,2,3,3,3-pentafluoropropoxy)pyrid-2-yl]methylsulfinylbenzimidazole as pale yellow prisms, m.p. 161°-163° C. (decomp.).

Provenance & Evidence