HCID 21529391, compound → 7-Chloro-1-(2,3-dihydroxypropyl)-5-(o-fluorophenyl)-1,3-dihydro-2H-1,4-benzodiazepin-2-one

Participants

Reaction Steps

400 mg of 7-chloro-1-(2,3-dihydroxypropyl)-5-(2-fluorophenyl)-1,3-dihydro-2H-1,4-benzodiazepin-2-one 4-oxide are dissolved in 20 ml of methanol, treated with 200 mg of Raney nickel paste and shaken under hydrogen. After uptake of the calculated amount of hydrogen, the mixture is filtered off from catalyst and the clear filtrate concentrated. By chromatography on silica gel with ethyl acetate/methanol (9:1) there is isolated from the residue 7-chloro-1-(2,3-dihydroxypropyl)-5-(2-fluorophenyl)-1,3-dihydro-2H-1,4-benzodiazepin-2-one of melting point 117°-118°C.

Provenance & Evidence