Carbon Tetrachloride → 1-methyl-3-fluoro-5-phenyl-7-nitro-2,3-dihydro-1H-1,4-benzodiazapin-2-one

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Reaction Steps

1.2 g. of acetyl nitrate are added dropwise, at 10° to a stirred solution of 2.67 g. of 1-methyl-3-fluoro-5-phenyl-2,3-dihydro-1H-1,4-benzodiazepin-2-one in 70 ml. of CCl4 and 20 ml. of acetonitrile. The mixture is stirred for 1 hour more at 10° and for 3 hours at 20° and is poured into ice cold sodium carbonate solution and worked up in the customary manner to give 1-methyl-3-fluoro-5-phenyl-7-nitro-2,3-dihydro-1H-1,4-benzodiazapin-2-one.

Provenance & Evidence