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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="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Russian Journal of General Chemistry</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of General Chemistry</journal-title><trans-title-group xml:lang="ru"><trans-title>Журнал общей химии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0044-460X</issn><issn publication-format="electronic">3034-5596</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">667443</article-id><article-id pub-id-type="doi">10.31857/S0044460X24030083</article-id><article-id pub-id-type="edn">FYVFMI</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Synthesis and Some Regularities of Transformations of 5,5-Dimethyl-3-(2-methylalyl)-2-thioxo-2,3,5,6-tetrahydrobenzo[h]quinazoline-4(1H)-one. Antibacterial Activity of the Obtained Compounds</article-title><trans-title-group xml:lang="ru"><trans-title>Синтез и некоторые закономерности превращений 5,5-диметил-3-(2-метилаллил)-2-ТИОКСО-2,3,5,6-тетрагидробензо[h]хиназолин-4(1H)-она. антибактериальные свойства полученных соединений</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6665-7118</contrib-id><name-alternatives><name xml:lang="en"><surname>Markosyan</surname><given-names>A. I.</given-names></name><name xml:lang="ru"><surname>Маркосян</surname><given-names>Ашот Ишханович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>ashot@mаrkosyan.am</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8384-7431</contrib-id><name-alternatives><name xml:lang="en"><surname>Ayvazyan</surname><given-names>A. S.</given-names></name><name xml:lang="ru"><surname>Айвазян</surname><given-names>Ани Сережаевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>nfo@rcsi.science</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gabrielyan</surname><given-names>S. А.</given-names></name><name xml:lang="ru"><surname>Габриелян</surname><given-names>С. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>nfo@rcsi.science</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Danghyan</surname><given-names>M. Yu.</given-names></name><name xml:lang="ru"><surname>Дангян</surname><given-names>М. Ю.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>nfo@rcsi.science</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Avakimyan</surname><given-names>J. A.</given-names></name><name xml:lang="ru"><surname>Авакимян</surname><given-names>Дж. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>nfo@rcsi.science</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Arsenyan</surname><given-names>F. H.</given-names></name><name xml:lang="ru"><surname>Арсенян</surname><given-names>Ф. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>nfo@rcsi.science</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Scientific and Technological Center of Organic and Pharmaceutical Chemistry of the National Academy of Sciences of the Republic of Armenia</institution></aff><aff><institution xml:lang="ru">Научно-технологический центр органической и фармацевтической химии Национальной академии наук Республики Армения</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-03-15" publication-format="electronic"><day>15</day><month>03</month><year>2024</year></pub-date><volume>94</volume><issue>3</issue><fpage>376</fpage><lpage>384</lpage><history><date date-type="received" iso-8601-date="2025-02-26"><day>26</day><month>02</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Российская академия наук</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://transsyst.ru/0044-460X/article/view/667443">https://transsyst.ru/0044-460X/article/view/667443</self-uri><abstract xml:lang="en"><p>Based on ethyl 1-amino-3,3-dimethyl-3,4-dihydronaphthalene-2-carboxylate (amino ester), a method for the synthesis of 5,5-dimethyl-3-(2-methylallyl)-2-thioxo-2,3,5,6-tetrahydrobenzo[<italic>h</italic>]quinazoline-4(1H)-one was developed. The latter was alkylated with halides of various structures, resulting in the production of 2-alkylsulfanyl-5,5-dimethyl-3-(2-methylallyl)-5, 6-dihydrobenzo[<italic>h</italic>]quinazoline-4(3<italic>H</italic>)-ones. By condensation of thioxobenzoquinazoline with hydrazine hydrate, 2-hydrazinyl-5,5-dimethyl-3-(2-methylallyl)-5,6-dihydrobenzo[<italic>h</italic>]quinazoline-4(3<italic>H</italic>)-one was synthesized, but similar reactions with 2-ethanolamine and 3-propanolamine proceeded abnormally with the formation of 2-(2-hydroxyethyl)amino-5,5-dimethyl-5,6-dihydrobenzo[<italic>h</italic>]quinazoline-4(3<italic>H</italic>)-one and 2-(3-hydroxypropyl)amino-5,5-dimethyl-5,6-dihydrobenzo[<italic>h</italic>]quinazoline-4(3<italic>H</italic>)-one, respectively. The interaction of the indicated thioxobenzoquinazoline with benzylamine proceeds with intramolecular cyclization with the formation of 6,6,10,10-tetramethyl-9,10-dihydro-5<italic>H</italic>-benzo[<italic>h</italic>]thiazolo[2,3-<italic>b</italic>]quinazoline-7(6<italic>H</italic>)-one. The antibacterial properties of the synthesized compounds were studied. It was found that the studied compounds have antibacterial activity.</p></abstract><trans-abstract xml:lang="ru"><p>На основе этил-1-амино-3,3-диметил-3,4-дигидронафталин-2-карбоксилата (аминоэфир) разработан метод синтеза 5,5-диметил-3-(2-метилаллил)-2-тиоксо-2,3,5,6-тетрагидробензо[<italic>h</italic>]хиназолин-4(1H)-она. Алкилирование последнего галогенидами различного строения в щелочной среде привело к получению 2-алкилсульфанил-5,5-диметил-3-(2-метилаллил)-5,6-дигидробензо[<italic>h</italic>]хиназолин-4(3<italic>H</italic>)-онов. Конденсацией тиоксобензохиназолина с гидразингидратом синтезирован 2-гидразинил-5,5-диметил-3-(2-метилаллил)-5,6-дигидробензо[<italic>h</italic>]хиназолин-4(3<italic>H</italic>)-он, однако аналогичные реакции с 2-этаноламином и 3-пропаноламином протекают аномально с образованием 2-(2-гидроксиэтил)амино-5,5-диметил-5,6-дигидробензо[<italic>h</italic>]хиназолин-4(3<italic>H</italic>)-она и 2-(3-гидроксипропил)амино-5,5-диметил-5,6-дигидробензо[<italic>h</italic>]хиназолин-4(3<italic>H</italic>)-она соответственно. Взаимодействие указанного тиоксобензохиназолина с бензиламином протекает c внутримолекулярной циклизацией с образованием 6,6,10,10-тетраметил-9,10-дигидро-5<italic>H</italic>-бензо[<italic>h</italic>]тиазоло[2,3-<italic>b</italic>]хиназолин-7(6<italic>H</italic>)-она. Изучены антибактериальные свойства синтезированных соединений. Установлено, что изученные соединения обладают антибактериальной активностью<italic>.</italic></p></trans-abstract><kwd-group xml:lang="en"><kwd>condensation</kwd><kwd>thioxobenzoquinazoline</kwd><kwd>intramolecular cyclization</kwd><kwd>sulfanylsubstituted</kwd><kwd>alkylation</kwd><kwd>antibacterial activity</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>конденсация</kwd><kwd>тиоксобензохиназолин</kwd><kwd>внутримолекулярная циклизация</kwd><kwd>сульфанилпроизводные</kwd><kwd>алкилирование</kwd><kwd>антибактериальная активность</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Комитет по науке Республики Армения (проект)</institution></institution-wrap><institution-wrap><institution xml:lang="en">Science Committee of the Republic of Armenia (draft)</institution></institution-wrap></funding-source><award-id>21T-1D061</award-id></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Pozharskii A.F., Ozeryanskii V.A., Mikshiev V.Y., Antonov A.S., Chernyshev A.V., Metelitsa A.V., Borodkin G.S., Fedik N.S., Dyablo O.V. // J. 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