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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Doklady Chemistry</journal-id><journal-title-group><journal-title xml:lang="en">Doklady Chemistry</journal-title><trans-title-group xml:lang="ru"><trans-title>Доклады Российской академии наук. Химия, науки о материалах</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2686-9535</issn><issn publication-format="electronic">3034-5111</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">651955</article-id><article-id pub-id-type="doi">10.31857/S2686953522600805</article-id><article-id pub-id-type="edn">ZGDGAZ</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>CHEMISTRY</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ХИМИЯ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">METHYLATION AND AMINATION OF 4<italic>H</italic>-[1,2,3]TRIAZOLO[4,5-<italic>c</italic>][1,2,5]OXADIAZOLE SALTS</article-title><trans-title-group xml:lang="ru"><trans-title>Метилирование и аминирование солей 4<italic>Н</italic>-[1,2,3]триазоло[4,5-<italic>c</italic>][1,2,5]оксадиазола</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Balabanova</surname><given-names>S. P.</given-names></name><name xml:lang="ru"><surname>Балабанова</surname><given-names>С. П.</given-names></name></name-alternatives><email>voronin@ioc.ac.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Voronin</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Воронин</surname><given-names>А. А.</given-names></name></name-alternatives><email>voronin@ioc.ac.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Churakov</surname><given-names>A. M.</given-names></name><name xml:lang="ru"><surname>Чураков</surname><given-names>А. М.</given-names></name></name-alternatives><email>voronin@ioc.ac.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Klenov</surname><given-names>M. S.</given-names></name><name xml:lang="ru"><surname>Кленов</surname><given-names>М. С.</given-names></name></name-alternatives><email>voronin@ioc.ac.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Tartakovsky</surname><given-names>V. A.</given-names></name><name xml:lang="ru"><surname>Тартаковский</surname><given-names>В. А.</given-names></name></name-alternatives><email>voronin@ioc.ac.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт органической химии им. Н.Д. Зелинского Российской академии наук</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-09-01" publication-format="electronic"><day>01</day><month>09</month><year>2023</year></pub-date><volume>512</volume><issue>1</issue><fpage>83</fpage><lpage>87</lpage><history><date date-type="received" iso-8601-date="2025-02-02"><day>02</day><month>02</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, С.П. Балабанова, А.А. Воронин, А.М. Чураков, М.С. Кленов, В.А. Тартаковский</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, С.П. Балабанова, А.А. Воронин, А.М. Чураков, М.С. Кленов, В.А. Тартаковский</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">С.П. Балабанова, А.А. Воронин, А.М. Чураков, М.С. Кленов, В.А. Тартаковский</copyright-holder><copyright-holder xml:lang="ru">С.П. Балабанова, А.А. Воронин, А.М. Чураков, М.С. Кленов, В.А. Тартаковский</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/2686-9535/article/view/651955">https://journals.eco-vector.com/2686-9535/article/view/651955</self-uri><abstract xml:lang="en"><p id="idm45257551877696">The methylation and the amination of 4<italic>H</italic>-[1,2,3]triazolo[4,5-<italic>c</italic>][1,2,5]oxadiazole salts (K<sup>+</sup>, Ag<sup>+</sup>, Et<sub>3</sub>NH<sup>+</sup>, DBUH<sup>+</sup>) were studied for the first time. It is shown that two methylated products are formed in the reaction. In the case of K- and Et<sub>3</sub>N-salts, 4- and 5-methylated isomers are formed in equal proportions, and in the case of Ag- and DBU-salts, the main product is the 4-isomer. It was found that the main product of amination of both 4<italic>H</italic>-[1,2,3]triazolo[4,5-<italic>c</italic>][1,2,5]oxadiazole K- and DBU-salts with <italic>O</italic>-(<italic>p</italic>-tolylsulfonyl)hydroxylamine is 4-azido-3-amino-1,2,5-oxadiazole. The mechanism of its formation as a result of rearrangement of 5-amino-[1,2,3]triazolo[4,5-<italic>c</italic>][1,2,5]oxadiazole is proposed.</p></abstract><trans-abstract xml:lang="ru"><p id="idm45257551876544">Впервые изучены реакции метилирования и аминирования солей (K<sup>+</sup>, Ag<sup>+</sup>, Et<sub>3</sub>NH<sup>+</sup>, DBUH<sup>+</sup>) 4<italic>Н</italic>-[1,2,3]триазоло[4,5-<italic>c</italic>][1,2,5]оксадиазола. Показано, что в реакции этих солей с MeI образуются два метилированных продукта, причем в случае К- и Et<sub>3</sub>N-солей 4- и 5-изомеры образуются в равных долях, а в случае Ag- и DBU-солей основным продуктом является 4-изомер. Найдено, что основным продуктом аминирования как K-, так и DBU-соли 4<italic>Н</italic>-[1,2,3]триазоло[4,5-<italic>c</italic>][1,2,5]оксадиазола <italic>O</italic>-(<italic>п</italic>-толилсульфонил)гидроксиламином является 4-азидо-3-амино-1,2,5-оксадиазол. Предложен механизм его образования в результате перегруппировки 5-амино-[1,2,3]триазоло[4,5-<italic>c</italic>][1,2,5]оксадиазола.</p></trans-abstract><kwd-group xml:lang="en"><kwd>1,2,3-triazole</kwd><kwd>1,2,5-oxadiazole</kwd><kwd>amination</kwd><kwd>methylation</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>1,2,3-триазолы</kwd><kwd>1,2,5-оксадиазолы</kwd><kwd>аминирование</kwd><kwd>метилирование</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Gao H., Zhang Q., Shreeve J.M. // J. Mat. Chem. A. 2020. V. 8. № 8. P. 4193–4216. https://doi.org/10.1039/C9TA12704F</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Zelenov V.P., Lobanova A.A., Lyukshenko N.I., Sysolyatin S.V., Kalashnikov A.I. // Russ. Chem. Bull. 2008. V. 57. № 7. 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