反应详情

From 10 g (0.028 mol) of 9-chloro-5-(o-fluorophenyl)-1,3-dihydro-3,3-dimethyl-7-nitro-2H-1,4-benzodiazepin-2-one and ethyl bromide there is obtained, in analogy to the details in paragraph (c) of Example 1, with a reaction period of 8 days and chromatography of the crude product on silica gel (elution agent: methylene chloride), 9-chloro-1-ethyl-5-(o-fluorophenyl)-1,3-dihydro-3,3-dimethyl-7-nitro-2H-1,4-benzodiazepin-2-one of melting point 117°-120° (ether/n-hexane).