Stannous chloride dihydrate → 2-Amino-N-quinolin-8-yl-benzenesulfonamide

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Reaction Steps

Tin (II) chloride dihydrate (4.11 g, 18.2 mmol) was added to a solution of 2-nitro-N-quinolin-8-yl-benzenesulfonamide (Example Compound 6) (2.0 g, 6.07 mmol) in EtOH (50 ml) and the mixture was heated under reflux for 2 h. After cooling, the mixture was concentrated in vacuo. The crude residue was dissolved in EtOAc (40 ml) and cooled in an ice bath, the mixture was basified with aqueous ammonia. The resulting white precipitate was collected by filtration, washed with EtOAc and discarded. The organic combined organic filtrates were washed with brine, dried (Na2SO4) and concentrated in vacuo to give the title compound (1.82 g, 53%).

Provenance & Evidence