Putrescine → HCID 57517491, compound

Participants

Reaction Steps

To a solution of tert-butyl (2,4-dimethoxyphenyl)carbamate (7.09 g) and tetramethylenediamine (12.7 mL) in THF (70 mL) was added 1.6 M n-butyllithium hexane solution (52.5 mL) at −78° C., and the mixture was stirred at the same temperature for 20 min, and then at room temperature for 45 min. To the reaction mixture was added a solution of N-fluoro-N-(phenylsulfonyl)benzenesulfonamide (12.8 g) in THF (30 mL) at −78° C., and the mixture was allowed to warm to room temperature, and stirred overnight. To the reaction mixture was added saturated aqueous ammonium chloride solution, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (hexane/ethyl acetate) to give the title compound (2.90 g).

Provenance & Evidence