A. S. Ermakov

Use of potassium sulfamate in the synthesis of heterocyclic nitramines

A preparative method for the synthesis of heterocyclic nitramines, containing the methylene tetramine fragment, has been proposed. The method is based on the nitration of the condensation products of urea, guanidine, 3, 4diaminofurazan, and S-aminotetrazole with formaldehyde and potassium sulfamate.

Sulfamic acid andN-alkylsulfamates in the synthesis of nitro derivatives of guanidine and aminofurazan

TheN-nitro derivatives of the products of the condensation of formaldehyde with sulfamic acid derivatives and guanidine, nitroguanidine, 3,4-diaminofurazan, and 3-amino-4-methylfurazan have been synthesized.

New synthetic approaches to functionally substituted 4,5-dihydro-1,2,3-oxadiazole 2-oxides

A practical procedure has been proposed for the synthesis of functionally substituted 4,5-dihydro-1,2,3-oxadiazole 2-oxides on the basis ofsulfamic acid derivatives.

Synthesis of β-nitroxyalkylnitramines

Abstractβ-Nitroxyalkylnitramines were obtained by nitration of β-hydroxyalkyl sulfamates, products of the condensation of derivatives of sulfamic acid with alkene oxides, by a mixture of HNO3 and H2SO4.

Synthesis ofN,N′-dialkylmethylenebis(nitramines) fromN-alkylsulfamates

Symmetrical and unsymmetricalN,N′-dialkylmethylenebis(nitramines) were obtained fromN-alkylsulfamates by condensation with formaldehyde and subsequent nitration.

Synthesis and nitration of condensation products of sulfamates with aliphatic amines and formaldehyde

A method for the synthesis of 5-alkyl-1,3-dinitro-1,3,5-triazacyclohexanes and linear polynitramines was proposed. It includes the reaction of aliphatic amines with sulfamates and formaldehyde and nitration of the reaction products. The yield and composition of nitramino derivatives depend on the conditions of the condensation and nitration.

Synthesis of β-nitramino derivatives ofgem-dinitroalkanes

A method for the synthesis of β-nitramino derivatives ofgem-dinitroalkanes by nitration of the products of condensation of sulfamic acid derivatives with the correspondinggem-dinitroalkanes was proposed.

New plasticizers for energetic materials

Specific features of the synthesis of new nitroxy-containing N,N′-bis(alkylnitramine) mixtures have been considered. The results of studying the plasticizing ability of the mixtures with respect to various cellulose nitrates, as well as the performance data on energetic materials on their basis, have been reported. Combustion of both the plasticizers and compositions on their basis has been studied in detail.

Synthesis of mixed plasticizers containing N,N′-bis(nitrooxyalkyl)-N,N′-dinitromethanediamines

New mixed plasticizers for gas-generating compositions on the basis of nitrooxy derivatives of N,N′-dialkyl-N,N′-dinitromethanediamines were obtained by condensation of N-hydroxyalkylsulfamates with formaldehyde, followed by nitration.

Synthesis of 2-Substituted N-Nitrooxazolidines

A method was developed for preparation of N-nitrooxazolidines functionally substituted in position 2 consisting in nitration of reaction products obtained from N-(2-hydroxyethyl)sulfamate and 2-substituted acetaldehydes.