Aluminium lithium hydride → HCID 22405158, compound

Participants

Reaction Steps

To a suspension of lithium aluminum hydride (168 mg) in tetrahydrofuran (10 ml) was added dropwise a solution of 5-(3,4-dimethoxybenzenesulfonyl)-1,3,4,5-tetrahydro -1,5-benzodiazepin-2(2H)-one (800 mg) at 0° C. The mixture was refluxed for 2.5 hours, and then the reaction was quenched with methanol. To the resulting mixture was added dropwise 2N sodium hydroxide solution (5 ml), and the mixture was stirred at ambient temperature for 30 minutes. The suspension was filtered through a bed of celite, and then the filtrate was diluted with ethyl acetate. The organic layer was washed with brine. Drying, filtering and the removal or solvents afforded a crude product. The crude product was chromatographed on silica gel (1% methanol in chloroform) to give 1-(3,4-dimethoxybenzenesulfonyl)-2,3,4,5-tetrahydro-1H-1,5-benzodiazepine (435 mg) as a yellow powder.

Provenance & Evidence