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<article article-type="research-article" dtd-version="1.3" 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" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">chemicallytech</journal-id><journal-title-group><journal-title xml:lang="en">Fine Chemical Technologies</journal-title><trans-title-group xml:lang="ru"><trans-title>Тонкие химические технологии</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2410-6593</issn><issn pub-type="epub">2686-7575</issn><publisher><publisher-name>MIREA – Russian Technological University (RTU MIREA).</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">chemicallytech-1509</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CHEMISTRY AND TECHNOLOGY OF ORGANIC SUBSTANCES</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ХИМИЯ И ТЕХНОЛОГИЯ ОРГАНИЧЕСКИХ ВЕЩЕСТВ</subject></subj-group></article-categories><title-group><article-title>Questions on selectivity of homo- and crossaldol condensation of lower aldehydes at presence of different salts of amines.</article-title><trans-title-group xml:lang="ru"><trans-title>Вопросы селективности альдольной гомо- и кросс-конденсации низших альдегидов в присутствии различных солей аминов.</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дашко</surname><given-names>Л. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Dashko</surname><given-names>L. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кафедра Физической химии им. Я.К. Сыркина, аспирант</p></bio><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Медведев</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Medvedev</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кафедра Физической химии им. Я.К. Сыркина,  студент</p></bio><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дмитриев</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Dmitriev</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кафедра Физической химии им. Я.К. Сыркина, ст. науч. сотр</p></bio><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Флид.</surname><given-names>В. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Flid</surname><given-names>V. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кафедра Физической химии им. Я.К. Сыркина, профессор</p></bio><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>МИТХТ им. М.В. Ломоносова, 119571, Москва, пр-т Вернадского, д. 86</institution><country>Россия</country></aff><aff xml:lang="en"><institution>M.V. Lomonosov Moscow State University of Fine Chemical Technologies, 86, Vernadskogo pr., Moscow 119571</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2008</year></pub-date><pub-date pub-type="epub"><day>28</day><month>08</month><year>2008</year></pub-date><volume>3</volume><issue>4</issue><fpage>23</fpage><lpage>31</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Dashko L.V., Medvedev V.V., Dmitriev D.V., Flid V.R., 2008</copyright-statement><copyright-year>2008</copyright-year><copyright-holder xml:lang="ru">Дашко Л.В., Медведев В.В., Дмитриев Д.В., Флид. В.Р.</copyright-holder><copyright-holder xml:lang="en">Dashko L.V., Medvedev V.V., Dmitriev D.V., Flid V.R.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.finechem-mirea.ru/jour/article/view/1509">https://www.finechem-mirea.ru/jour/article/view/1509</self-uri><abstract><p>Reactions of homo- and crossaldol condensation of formaldehyde and acetaldehyde were studied at presence of primary, secondary and tertiary amine salt of linear structure in N,N-dimethylacetamide, water and toluene. It was found that in all solvents conversion of reagent is increased with increase of bacity of amine, but selectivity on cross-reaction became lower because of formation side products of acetaldehyde homo-condensation. The conversion of acetaldehyde is also increased with increase of solvent polarity.</p></abstract><trans-abstract xml:lang="ru"><p>Исследованы реакции альдольной гомо- и кросс-конденсации ацетальдегида и формальдегида в присутствии первичных, вторичных и третичных солей аминов линейного строения в среде N,N-диметилацетамида, воды и толуола. Установлено, что во всех растворителях с ростом основности амина увеличивается конверсия реагентов, но при этом снижается селективность кросс-конденсации за счет образования продуктов гомо-конденсации ацетальдегида. Обнаружено, что с ростом полярности растворителя увеличивается конверсия ацетальдегида.</p></trans-abstract></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">.1. Пат. 5254743 США Solid bases as catalysts in aldol condensation/ J.S. Holmgren, B.J. Arena; заявлено; 19.12.1992, опубл. 19.10.1993.</mixed-citation><mixed-citation xml:lang="en">.1. Пат. 5254743 США Solid bases as catalysts in aldol condensation/ J.S. Holmgren, B.J. Arena; заявлено; 19.12.1992, опубл. 19.10.1993.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Пат. 5434313. США. Aldolisation-dehydration process / G.E. Harrison, A.J. Reason, A.J. Dennis, M. Sharif; заявлено; 07.04.1993, опубл. 18.06.1995.</mixed-citation><mixed-citation xml:lang="en">Пат. 5434313. США. Aldolisation-dehydration process / G.E. Harrison, A.J. Reason, A.J. Dennis, M. 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