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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">651975</article-id><article-id pub-id-type="doi">10.31857/S2686953522600386</article-id><article-id pub-id-type="edn">YRDUJD</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">N,O-, N,N-, N,S- AND N,N,S-HETEROCYCLES WITH AN EXOCYCLIC AMINOGROUP IN THE SYNTHESIS OF 1,5,3,7-DIAZADIPHOSPHACYCLOOCTANES</article-title><trans-title-group xml:lang="ru"><trans-title>N,O-, N,N-, N,S- и N,N,S-гетероциклы с экзоциклической аминогруппой в cинтезе 1,5,3,7-диазадифосфациклооктанов</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Spiridonova</surname><given-names>Yu. S.</given-names></name><name xml:lang="ru"><surname>Спиридонова</surname><given-names>Ю. С.</given-names></name></name-alternatives><email>elli@iopc.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Litvinov</surname><given-names>I. A.</given-names></name><name xml:lang="ru"><surname>Литвинов</surname><given-names>И. А.</given-names></name></name-alternatives><email>elli@iopc.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Musina</surname><given-names>E. I.</given-names></name><name xml:lang="ru"><surname>Мусина</surname><given-names>Э. И.</given-names></name></name-alternatives><email>elli@iopc.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Karasik</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Карасик</surname><given-names>А. А.</given-names></name></name-alternatives><email>elli@iopc.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт органической и физической химии 
им. А.Е. Арбузова – обособленное структурное подразделение Федерального государственного бюджетного учреждения науки “Федеральный исследовательский центр “Казанский научный 
центр РАН”</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-05-01" publication-format="electronic"><day>01</day><month>05</month><year>2023</year></pub-date><volume>510</volume><issue>1</issue><fpage>40</fpage><lpage>47</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, Ю.С. Спиридонова, И.А. Литвинов, Э.И. Мусина, А.А. Карасик</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, Ю.С. Спиридонова, И.А. Литвинов, Э.И. Мусина, А.А. Карасик</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">Ю.С. Спиридонова, И.А. Литвинов, Э.И. Мусина, А.А. Карасик</copyright-holder><copyright-holder xml:lang="ru">Ю.С. Спиридонова, И.А. Литвинов, Э.И. Мусина, А.А. Карасик</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/2686-9535/article/view/651975">https://journals.eco-vector.com/2686-9535/article/view/651975</self-uri><abstract xml:lang="en"><p id="idm45181323719616">New 1,5,3,7-diazadiphosphacyclooctanes with N,O-, N,N-, N,S- and N,N,S-heterocyclic substituents at nitrogen atoms were synthesized. The influence of amines containing <italic>sp</italic><sup>2</sup>-hybridized nitrogen atom on the <italic>ortho</italic>-position of the heterocyclic substituent on the result of a Mannich condensation of primary phosphines, paraformaldehyde and primary amines is revealed. The stabilization of intermediate acyclic products – aminomethyl(hydroxymethyl)arylphosphines and bis(aminomethyl)arylphosphines due to amino-imine tautomerism is a reason of the low yield of cyclic diphosphines on the base of above mentioned amines.</p></abstract><trans-abstract xml:lang="ru"><p id="idm45181323718128">Синтезированы новые 1,5,3,7-диазадифосфациклооктаны с N,O-, N,N-, N,S- и N,N,S-гетероциклическими заместителями при атомах азота. Выявлено влияние природы аминов, содержащих в гетероциклическом заместителе в <italic>орто</italic>-положении <italic>sp</italic><sup>2</sup>-гибридизованный атом азота, на результат реакции конденсации Манниха в системе “фосфин–параформальдегид–первичный амин”. Низкий выход целевых циклических дифосфинов на основе указанных аминов обусловлен стабилизацией промежуточных ациклических продуктов – аминометил(гидроксиметил)арилфосфинов и бис(аминометил)арилфосфинов, вероятно, за счет амино-иминной таутомерии.</p></trans-abstract><kwd-group xml:lang="en"><kwd>isoxazole</kwd><kwd>benzimidazole</kwd><kwd>benzothiazol</kwd><kwd>thiadiazole</kwd><kwd>cyclic phosphines</kwd><kwd>1,5,3,7-diazadiphosphacyclooctanes</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>изоксазол</kwd><kwd>бензимидазол</kwd><kwd>бензотиазол</kwd><kwd>тиадиазол</kwd><kwd>циклические фосфины</kwd><kwd>1,5,3,7-диазадифосфациклооктаны</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Физико-химические исследования выполнены с использованием оборудования Распределенного коллективного спектро-аналитического Центра изучения строения, состава и свойств веществ и материалов ФИЦ КазНЦ РАН.</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Lehn J.-M. // Chem. 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