ChemInform Abstract: SYNTHESIS AND PROPERTIES OF ANALOGS OF 5(4)‐AMINOIMIDAZOLE‐4(5)‐CARBOXAMIDE AND PURINES. 13. SYNTHESIS OF 5(4)‐HYDRAZINOIMIDAZOLES AND THEIR DERIVATIVES

Mokrushin, V. S.; Golovina, E. F.; Nifontov, V. I.; Бакулев, В. А.; Поспелова, T. А.; Usova, V. K.

doi:10.1002/chin.198414203

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2004

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“…The elemental analysis as well as 1 H NMR and IR spectroscopy indicate that this product is 17-iminoestra-1,3,5-trien-3-ol (8). This product was isolated from the reaction mixture as a white precipitate upon the addition of cold water.…”

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confidence: 94%

“…Furthermore, 5-diazoimidazole-4-carboxamide (1a) and 5-diazoimidazole-4-(Nmethylcarboxamide) (1b) may undergo intramolecular cyclization leading to imidazotriazines 6a and 6b [5,7,8]. Furthermore, 5-diazoimidazole-4-carboxamide (1a) and 5-diazoimidazole-4-(Nmethylcarboxamide) (1b) may undergo intramolecular cyclization leading to imidazotriazines 6a and 6b [5,7,8].…”

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confidence: 99%

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Reactions of 5-diazoimidazoles With steroid hydrazones

Садчикова¹,

Kureneva²,

Shtokareva³

et al. 2004

Chem Heterocycl Compd

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The reaction of 5-diazoimidazoles with steroid hydrazones was studied. The structure of the steroid derivative was found to have a significant effect on the direction of the nitrogen transfer in the unstable intermediate tetrazene. The presence of a labile proton in the reaction mixture permits stabilization of one of the tetrazene forms such that only direction was found for the nitrogen transfer in all the reactions studied, leading to imidazole azides and iminosteroid derivatives.

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confidence: 94%