T. I. Godovikova

Synthesis and reactivity of furazanyl- and furoxanyldiazonium salts

Diazotization of aminofurazans (1) and 4-aminofuroxans (2) with nitrosylsulfuric acid in a mixture of conc. H2SO4 and H3PO4 has been studied and offered as a general method for preparing furazanyl- (3) and furoxanyldiazonium (4) salts. It has been shown that reactions with the retention of the N-N-group (azo coupling, formation of triazenes and azides) are typical of salts3 and4, while elimination of the N2 molecule (Sandmeyer reaction, hydrolysis, reduction) is not typical.

Synthesis of 5-dinitromethyltetrazole

A convenient method of synthesizing 5-dinitromethyltetrazole on the basis of 1,1-diamino-2,2-dinitroehtilene was developed.

New method for the synthesis of 1,2,3-triazole 1-oxides

A general method is proposed for the synthesis of 1,2,3-triazole 1-oxides using 3,4-dinitro- or 4-amino-3-nitrofuroxanes.

Reactions of 2,4-Disubstituted 5-Nitro-1,2,3-triazole 1-Oxides. 4. Dealkylation of 2-Substituted 4,5-Dinitro-1,2,3-triazole 1-Oxides

The N-dealkylation of 2-alkyl or 2-benzyl-substituted 4,5-dinitro-1,2,3-triazole 1-oxides has been studied. Conditions have been found for N-de-tert-butylation and 4-amino-5-nitro-1,2,3-triazole 1-oxide has been synthesized for the first time.

Synthesis of 4,7-diaminopyridazino[4,5-c]furoxan

Abstract4,7-Diaminopyridazino[4,5-c]furoxan was synthesized by intramolecular cyclization of 3-cyanofuroxan-4-carbamidrazone obtained from 3,4-dicyanofuroxan and hydrazine.

REDUCTION OF THE FUROXAN RING TO THE FURAZAN RING IN SOME CARBONYL-SUBSTITUTED FUROXANS

It was shown that the furoxan ring is efficiently reduced to the furazan ring in carbonylsubstituted furoxans with other functional groups by the action of the SnCl2-HC1-AcOH system.

Synthesis and nucleophilic substitution reactions of 3,4-dinitrofuroxan

Abstract3, 4 Dinitrofuroxan and 3-nitrofuroxans derived from it by functional group substitution at position 4 have been synthesized for the first time.

Synthesis and properties of 1,2,3-triazole 1-oxides (review)

Data on the preparation, properties, and use of uncondensed 1,2,3-triazole 1-oxides are correlated for the first time.

Trisubstituted 1,3,5-triazines. 4. Synthesis of 2-nitroamino-4,6-bis(trinitromethyl)-1,3,5-triazine

The nitration, at the amino group, of 2-amino-4,6-bis(trinitromethyl)-1,3,5-triazine and its derivatives has been studied.

Reaction of furoxanenitrolic acids with nitrogen tetroxide

It has been found that the main direction of the reaction of furoxanenitrolic acids with N2O4 is the formation of the corresponding nitrile oxides and their subsequent conversions.