On the reaction of 3-nitro-1,2-phenylenediamine with ethyl acetoacetate. Condensed dihydrodiazepinones |
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| Authors: | Benedikta Puodi nait&#x; Lidija Kosychova Zita Stumbrevi
i t&#x; Regina Jan
ien&#x; Zita Talaikyt&#x; |
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| Institution: | Benedikta Puod?iūnait?,Lidija Kosychova,Zita Stumbrevi?iūt?,Regina Jan?ien?,Zita Talaikyt? |
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| Abstract: | Condensation of 3-nitro-1,2-phenylenediamine with ethyl acetoacetate in boiling xylene gave two isomeric 2,3-dihydro-4-methyl-9-nitro- and 2,5-dihydro-4-methyl-6-nitro-1H-1,5-benzodiazepin-2-ones, the 9-nitro derivative thermal rearrangement product N-isopropenyl-4-nitrobenzimidazolone and a non cyclic acetoacetamide derivative. At room temperature these reactants afforded 2,3-dihydro-2-ethoxycarbonyl-methyl-2-methyl-4-nitrobenzimidazole. |
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