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Analiza cu ajutorul reacțiilor biologice și biochimice. Metode biologice utilizate în scopuri analitice (9) |
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SM ISO690:2012 SUCMAN, Natalia, POGREBNOI, Vsevolod, OBUSHAK, Mykola, MELNIK, E., KRAVTSOV, Victor, MAKAEV, Fliur. The synthesis of new spirolactones from substituted isatins . In: Chemistry Journal of Moldova, 2015, nr. 1(10), pp. 64-70. ISSN 1857-1727. DOI: https://doi.org/10.19261/cjm.2015.10(1).09 |
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Chemistry Journal of Moldova | |
Numărul 1(10) / 2015 / ISSN 1857-1727 /ISSNe 2345-1688 | |
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DOI:https://doi.org/10.19261/cjm.2015.10(1).09 | |
CZU: 543.9+547 | |
Pag. 64-70 | |
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Rezumat | |
Interaction of N-ethyl isatin 3 with dimethyl acetylenedicarboxylate in the presence triphenylphosphine has led to good selectivity of methyl 1’-ethyl-4-methoxy-2’,5-dioxo-5H-spiro[furan-2,3’-indoline]-3-carboxylate 4 formation. Similar yields of spirolactones 6,8 were obtained by addition of dimethyl acetylenedicarboxylate to 5-bromo functionalized isatins 5,7. However, reaction of N-butyl isatin 9 resulted in formation of an inseparable mixture of compounds. Treatment of N-benzyl isatin 10 and dimethyl acetylenedicarboxylate with triphenylphosphine proceeded with reduced selectivity of the spirooxindole 11 formation. |
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Cuvinte-cheie spirolactones, isatins, dimethyl acetylenedicarboxylate., triphenylphosphine |
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<meta name="citation_title" content="The synthesis of new spirolactones from substituted isatins "> <meta name="citation_author" content="Sucman Natalia"> <meta name="citation_author" content="Pogrebnoi Vsevolod"> <meta name="citation_author" content="Obushak Mykola"> <meta name="citation_author" content="Melnik E."> <meta name="citation_author" content="Kravtsov Victor"> <meta name="citation_author" content="Makaev Fliur"> <meta name="citation_publication_date" content="2015/06/11"> <meta name="citation_journal_title" content="Chemistry Journal of Moldova"> <meta name="citation_volume" content="10"> <meta name="citation_issue" content="1"> <meta name="citation_firstpage" content="64"> <meta name="citation_lastpage" content="70"> <meta name="citation_pdf_url" content="https://ibn.idsi.md/sites/default/files/imag_file/p.64-70%20The%20synthesis%20of%20new%20spirolactones%20from%20substituted%20isatins_0.pdf">