Sodium hydride → 5-Chloro-6-((8-fluoro-1,4-dioxaspiro[4.5]decan-8-yl)methoxy)pyridine-3-sulfonamide

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Reaction Steps

To a solution of EXAMPLE 512B (500 mg) in N,N-dimethylformamide (5 mL) was added NaH (65% in mineral oil, 252 mg) at room temperature. The mixture was stirred for 30 minutes, and then 5,6-dichloropyridine-3-sulfonamide (0.6 g) was added. The mixture was stirred at room temperature overnight. The mixture was poured over aqueous NH4Cl and extracted with ethyl acetate (3×100 mL). The combined organic layers were washed with water, brine and dried over Na2SO4. After filtration and evaporation of the solvent, the residue was loaded on a silica gel cartridge and eluted with 30% ethyl acetate in hexane to give the pure product.

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