Water → N-(4-t-Butoxycarbonylaminothiophen-3-yl)-5-methanesulfonyloxymethylpyridine-2-carboxylic acid amide

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Reaction Steps

Under ice cooling, methanesulfonyl chloride (71 μL, 0.92 mmol) was added to a solution of N-(4-t-butoxycarbonylaminothiophen-3-yl)-5-hydroxymethylpyridine-2-carboxylic acid amide (Reference Compound No. 3-1, 0.32 g, 0.93 mmol) and triethylamine (0.32 mL, 2.3 mmol) in anhydrous dichloromethane (20 mL), and then the reaction mixture was stirred for 2 hour. Water (0.15 L) and ethyl acetate (0.15 L) were added thereto and the whole was partitioned. The organic layer was washed with brine (0.15 L), dried over anhydrous sodium sulfate, and then the solvent was evaporated under reduced pressure to give 0.36 g of the title reference compound as a yellow solid. (Yield 91%)

Provenance & Evidence