Method for producing dinitro-diaza-alkanes and interediate products thereof

A method of synthesis of dinitro-diaza-alkanes from alkylamines and esters, characterized by a combination of the following steps:

• 1. reacting a diester of a dicarboxylic acid with an alkylamine in an aqueous medium to yield the corresponding dialkyldiamide of the dicarboxylic acid;
• 2. nitrating the resulting dialkyldiamide by means of the usual nitration agents to form the corresponding dialkyldinitroamide of dicarboxylic acid;
• 3. reacting the resulting dialkyldinitroamide to form the corresponding alkylnitroamine by mixing the dialkyldinitroamide in an aqueous medium with methylamine and/or ethylamine, separating the resulting dimethyldiamide and/or diethyldiamide of the dicarboxylic acid, acidifying the remaining product and then extracting the alkylnitroamine from that;
• and
• 4. condensing the isolated alkylnitroamine to form the dinitro-diaza-alkanes in the known manner.