Patent ID: 6670506
Filing Date: 2003-12-30
Classification: C07C

Abstract:
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.