Sodium hydride → HCID 67396861, compound

Participants

Reaction Steps

To a suspension of sodium hydride (60% in oil, 26 mg) in tetrahydrofuran (4 mL) were added dropwise a solution of tert-butyl {[5-(2-cyanopyridin-3-yl)-1H-pyrrol-3-yl]methyl}methylcarbamate (156 mg) in tetrahydrofuran (2 mL), 15-crown-5 (0.13 mL) and 6-methoxypyridine-3-sulfonyl chloride (135 mg) under ice-cooling, and the mixture was stirred for 30 min. The reaction mixture was diluted with ice water, and extracted with ethyl acetate. The separated aqueous layer was extracted again with ethyl acetate. The combined organic layer was washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (eluent: hexane-ethyl acetate=9:1→2:3) to give the title compound as a pale-yellow oil (yield 235 mg, 97%).

Provenance & Evidence