Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Tetrahedron Letters called A catalyst and additive-free three-component reaction of highly electrophilic azides with cyclic ketones and cycloaliphatic amines. Synthesis of novel N-heteroaryl amidines, Author is Efimov, Ilya; Beliaev, Nikolai; Beryozkina, Tetyana; Slepukhin, Pavel; Bakulev, Vasiliy, which mentions a compound: 4531-54-8, SMILESS is NC1=C([N+]([O-])=O)N=CN1C, Molecular C4H6N4O2, Quality Control of 1-Methyl-4-nitro-1H-imidazol-5-amine.
Highly electrophilic 5-azido-1-methyl-4-nitro-1H-imidazole and sulfonyl azides were demonstrated to react with alicyclic amines and cyclic ketones in the absence of any catalyst or additive to afford novel N-(4-nitroimidazol-5-yl)- or N-sulfonylamidines resp. Based on single crystal X-ray anal., a revision of the previously reported data of Gao and co-workers on the direction of the reaction of sulfonyl azides with endocyclic enamines was made. The reaction of 2,6-diazidopyridine with an enamine, 4-(cyclohex-1-en-1-yl)morpholine, proceeded with cyclization of the azide moiety onto the pyridine C=N bond to form an amidine bearing the tetrazolo[1,5-a]pyridine fragment.
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Reference:
Thiomorpholine – Wikipedia,
Thiomorpholine | C4H9NS – PubChem