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 1261 6 |
| Ultima descărcare din IBN: 2022-04-30 16:51 |
| Căutarea după subiecte similare conform CZU |
| 543.9+547 (1) |
| Analiza cu ajutorul reacțiilor biologice și biochimice. Metode biologice utilizate în scopuri analitice (9) |
| Chimie organică (484) |
 SM ISO690:2012SUCMAN, 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 |
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| 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 | |
 Descarcă PDF |
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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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Dublin Core Export
<?xml version='1.0' encoding='utf-8'?> <oai_dc:dc xmlns:dc='http://purl.org/dc/elements/1.1/' xmlns:oai_dc='http://www.openarchives.org/OAI/2.0/oai_dc/' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xsi:schemaLocation='http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd'> <dc:creator>Sucman, N.S.</dc:creator> <dc:creator>Pogrebnoi, V.S.</dc:creator> <dc:creator>Obushak, M.</dc:creator> <dc:creator>Melnic, E.I.</dc:creator> <dc:creator>Kravţov, V.H.</dc:creator> <dc:creator>Macaev, F.Z.</dc:creator> <dc:date>2015-06-11</dc:date> <dc:description xml:lang='en'>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. </dc:description> <dc:identifier>10.19261/cjm.2015.10(1).09</dc:identifier> <dc:source>Chemistry Journal of Moldova 10 (1) 64-70</dc:source> <dc:subject>spirolactones</dc:subject> <dc:subject>isatins</dc:subject> <dc:subject>triphenylphosphine</dc:subject> <dc:subject>dimethyl acetylenedicarboxylate.</dc:subject> <dc:title>The synthesis of new spirolactones from substituted isatins </dc:title> <dc:type>info:eu-repo/semantics/article</dc:type> </oai_dc:dc>
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