Potassium peroxymonosulphate → N-(4-chlorophenyl)-2-[((3-chloro-5-(1-(oxo)thiomorpholin-4-yl)methylthiophen-2-yl)carbonyl)amino]-5-chlorobenzamide

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Reaction Steps

To a suspension of N-(4-chlorophenyl)-2-[((3-chloro-5-(thiomorpholin-4-yl)methylthiophen-2-yl)carbonyl)amino]-5-chlorobenzamide (0.1 g, 0.2 mmol) in methanol (20 mL) at 0° C. was added a solution of potassium peroxymonosulfate (0.13 g, 0.2 mmol) in water (5 mL). After 5 minutes, the reaction was quenched by addition of aqueous 5% sodium bisulfite solution. The mixture was extracted with methylene chloride/methanol, and the organic phase dried over Na2SO4 and concentrated in vacuo. Purification by flash chromatography on silica gel afforded 0.064 g (62% yield) of N-(4-chlorophenyl)-2-[((3-chloro-5-(1-(oxo)thiomorpholin-4-yl)methylthiophen-2-yl)carbonyl)amino]-5-chlorobenzamide, as a pale yellow powder; NMR (DMSO-d6/TFA) 11.2 (s, 1), 10.7 (s, 1), 8.3 (d, 1), 7.9 (s, 1), 7.7 (m, 2), 7.6 (m, 1), 7.4 (m, 3), 4.7 (s, 2), 3.7 (m, 2), 3.5 (m. 2), 2.9 (br s, 4) ppm.

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