ChemInform Abstract: Synthesis of N,N′‐Dialkylmethylenebis(nitramines) from N‐Alkylsulfamates.

Abstract

Symmetrical and unsymmetrical N,N'-dialkylmethylenebis(nitramines) were obtained from N-alkylsulfamates by condensation with formaldehyde and subsequent nitration.

Combustion of systems containing linear nitramines

“…It is obvious that the addition of RDX to the powder or the replacement of NGC by DNP decreases the surface temperature and the temperature gradient near the surface. This, as in the case of HMX [8,11,12], (10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20) leads to a decrease in the burning rate. For all samples, the heat supply from the smoke-gas zone is 10-15%, i.e., the leading stage of combustion is in the c-phase.…”

“…In the last twenty years, Tartakovskii et al (Institute of Organic Chemistry, Russian Academy of Sciences) have developed [14][15][16] fairly simple production methods for a number of linear nitramines, in particular:…”

Safe and Convenient Synthesis of Primary N-Nitramines in the Freon Media

“…Primary N-nitramines are versatile building blocks for combinatorial synthesis of various N-nitramino compounds, which are used as components of rocket propellants and plasticizers, or other components of high energy compositions. [1][2][3][4][5][6] The classic two-step synthesis of primary N-nitramines is based on the nitration of N-alkylamides (Nalkylcarbamates) with nitric acid, 7 mixed acids (HNO 3 -H 2 SO 4 ), 8 or HNO 3 -Ac 2 O nitrating system 9 followed by basic hydrolysis 7 (ammonolysis) [10][11][12][13] of corresponding N-nitramides or N-nitrourethanes. However, a highly excessive amount of the nitrating agents is needed at the nitration step.…”