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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="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">vestich</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной академии наук Беларуси. Серия химических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus, Chemical Series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8331</issn><issn pub-type="epub">2524-2342</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">vestich-222</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="ru"><subject>ОРГАНИЧЕСКАЯ ХИМИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORGANIC CHEMISTRY</subject></subj-group></article-categories><title-group><article-title>СИНТЕЗ ПРОИЗВОДНЫХ 2,2′-ДИГИДРОКСИБИФЕНИЛА</article-title><trans-title-group xml:lang="en"><trans-title>SYNTHESIS OF 2,2′-DIHYDROXYBIPHENYL DERIVATIVES</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>Петушок</surname><given-names>В. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Petushok</surname><given-names>V. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>науч. сотрудник.</p></bio><bio xml:lang="en"><p>Scientific Researcher.</p></bio><email xlink:type="simple">vitalqqqq@tut.by</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>Калечиц</surname><given-names>Г. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kalechytc</surname><given-names>G. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. хим. наук, науч. сотрудник.</p></bio><bio xml:lang="en"><p>Scientific Researcher</p></bio><email xlink:type="simple">face@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>Ольховик</surname><given-names>В. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Olkhovic</surname><given-names>V. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. хим. наук, зав. лаб.</p></bio><bio xml:lang="en"><p>Ph. D. (Chemistry), Head of laboratory.</p></bio><email xlink:type="simple">face@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт химии новых материалов НАН Беларуси</institution></aff><aff xml:lang="en"><institution>Institute of Chemistry of New Materials National Academy of Science of Belarus</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2016</year></pub-date><pub-date pub-type="epub"><day>17</day><month>01</month><year>2017</year></pub-date><volume>0</volume><issue>4</issue><fpage>60</fpage><lpage>64</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Петушок В.Г., Калечиц Г.В., Ольховик В.К., 2017</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="ru">Петушок В.Г., Калечиц Г.В., Ольховик В.К.</copyright-holder><copyright-holder xml:lang="en">Petushok V.G., Kalechytc G.V., Olkhovic V.K.</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://vestichem.belnauka.by/jour/article/view/222">https://vestichem.belnauka.by/jour/article/view/222</self-uri><abstract><p>Осуществлен синтез 2,2-дигидроксибифенил-4,4-дикарбоновой кислоты щелочным плавлением 1-нитро-, 1-метокси производных 5,5- диоксодибензотиофен-3,7-дикарбоновой кислоты. Показано, что в этих условиях наряду с раскрытием тиофенового цикла протекает реакция циклизации с образованием небольших количеств дибензофуран-3,7- и 4-гидроксикарбазол-2,7-дикарбоновых кислот. Вследствие легкого выделения дибутилового эфира 2,2′-дигидроксибифенил-4,4-дикарбоновой кислоты из реакционной смеси и возможностью использования его в качестве интермедиата для синтеза симметричных полисопряженных органических соединений с центральным бифенильным ядром была проведена дальнейшая модификация гидроксильных и сложноэфирных групп. Полученные конечные4,4′-бис(2-фенил-(Е)-этенил)бифенилы интенсивно люминесцируют в твердом состоянии от 480 нм сине-зеленой до зелено-желтой 530 нм, а в растворах от синей 440 нм до сине-зеленой 480 нм области спектра.</p></abstract><trans-abstract xml:lang="en"><p>Synthesis of 2,2′-dihydroxybiphenyl-4,4-dicarboxylic acid by alkaline fusion of 1-nitro- and 1-methoxy substituted 5,5-dioxodibenzothiophene-3,7-dicarboxylic acids has been investigated. It has been shown that along with dibenzothiophene ring opening and formation of biphenyls, a cyclization reaction also occurred. Small amounts of dibenzofuran-3,7-and 4-hydroxycarbazole-2,7-dicarboxylic acids have been found among products of the reaction. New luminescent dyes based on 2,2′-hydroxybiphenyls have been synthesized.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>дибензотиофен</kwd><kwd>щелочное плавление</kwd><kwd>карбазол</kwd><kwd>дибензофуран</kwd></kwd-group><kwd-group xml:lang="en"><kwd>dibenzothiophene</kwd><kwd>alkaline fusion</kwd><kwd>carbazole</kwd><kwd>dibenzofuran</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Di(biphenyl)silane and carbazole based bipolar host materials for highly efficient blue phosphorescent OLEDs / Gyeong Woo Kim [et al.] // Dyes and Pigments. – 2017. – Vol. 136. – P. 8–16.</mixed-citation><mixed-citation xml:lang="en">Gyeong Woo Kima, Doo Ri Yangb, Yong Cheol Kima, Hye In Yanga, Jin Guo Fanb, Choong-Hun Leec, Kyu Yun Chaib and Jang Hyuk Kwona (2017) «Di(biphenyl)silane and carbazole based bipolar host materials for highly efficient blue phosphorescent OLEDs», Dyes and Pigments, vol. 136, pp. 8–16.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Synthesis and comparative studies of phase transition behaviour of new dimeric liquid crystals consisting of dimethyluracil and biphenyl cores / Mohammad AbdulKarim-Talaq [et al.] // J. of Molecular Liquids. – 2016. – Vol. 219. – P. 765–772.</mixed-citation><mixed-citation xml:lang="en">Mohammad AbdulKarim-Talaq (2016) «Synthesis and comparative studies of phase transition behaviour of new dimeric liquid crystals consisting of dimethyluracil and biphenyl cores», Journal of Molecular Liquids, vol. 219, pp. 765–772.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Baheti, A. 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