Method for producing dinitro-diaza-alkanes and intermediate...

C - Chemistry – Metallurgy – 07 – C

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C07C 243/02 (2006.01) C06B 25/34 (2006.01) C07C 241/00 (2006.01)

Patent

CA 2368488

The invention relates to a method for producing dinitro-diaza-alkanes and intermediate products hereto from alkylamines and esters. According to the inventive method, a dialkylester of a dicarboxylic acid is converted with an alkylamine in an aqueous medium into the corresponding dialkyldiamide of the dicarboxylic acid. The obtained dialkyldiamide is nitrated using common nitrating agents to form the corresponding dialkyldinitroamide of the dicarboxylic acid. The obtained dialkyldinitroamide is converted with methylamine and/or ethylamine in an aqueous medium into the corresponding alkyl nitramine and into dimethylamide and/or diethyldiamide of the dicarboxylic acid. The alkyl nitramine is isolated out therefrom and is condensed in a conventional manner to form dinitro-diaza-alkanes.

L'invention concerne un procédé permettant de préparer des dinitrodiaza-alcanes et des produits intermédiaires appropriés, à base d'alkylamines et d'esters. Selon ce procédé, un dialkylester d'acide dicarboxylique est mis à réagir avec une alkylamine dans un milieu aqueux pour obtenir le dialkyldiamide correspondant de l'acide dicarboxylique. Le dialkyldiamide obtenu est nitré au moyen d'agents de nitration classiques pour donner lieu au dialkyldinitroamide correspondant de l'acide dicarboxylique. Le dialkyldinitroamide obtenu est mis à réagir avec de la méthylamine et/ou de l'éthylamine dans un milieu aqueux pour obtenir l'alkylnitramine correspondante et le diméthyldiamide et/ou le diéthyldiamide de l'acide dicarboxylique. L'alkylnitramine en est isolée et est condensée de manière connue en soi, pour donner lieu aux dinitrodiaza-alcanes.

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