Formation of fluorinated 1-oxaspiro[2.5]octa-4,7-dienes from polyfluorinated cyclohexa-2,5-dienones with diazomethane and reactions with aryl and 2-chloroethyl isocyanates Full article
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European Journal of Organic Chemistry
ISSN: 1434-193X , E-ISSN: 1099-0690 |
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| Output data | Year: 2005, Volume: 2005, Number: 6, Pages: 1178-1183 Pages count : DOI: 10.1002/ejoc.200400559 | ||||
| Tags | fluorinated cyclohexadienones; heterocycles; oxiranes | ||||
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Abstract:
The reactions of four polyfluorinated cyclohexa-2,5-dienones 1a-1d, additionally substituted with an electron withdrawing substituent at the 4-position, with diazomethane give mixtures of two diastereomeric fluorinated 1-oxaspiro[2.5]octa-4,7-dienes 2 and 3. Compounds 2a/3a and 2b/3b react with aryl and 2-chloroethyl isocyanates in the presence of lithium chloride or sodium pentafluorophenoxide to form fluorinated dihydro-1,3-benzoxazol-2(3H)-ones 5a-5c as the major products, ((c) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005).
Cite:
Kovtonyuk V.
, Kobrina L.
, Kataeva O.
, Haufe G.
Formation of fluorinated 1-oxaspiro[2.5]octa-4,7-dienes from polyfluorinated cyclohexa-2,5-dienones with diazomethane and reactions with aryl and 2-chloroethyl isocyanates
European Journal of Organic Chemistry. 2005. V.2005. N6. P.1178-1183. DOI: 10.1002/ejoc.200400559 WOS Scopus РИНЦ OpenAlex
Formation of fluorinated 1-oxaspiro[2.5]octa-4,7-dienes from polyfluorinated cyclohexa-2,5-dienones with diazomethane and reactions with aryl and 2-chloroethyl isocyanates
European Journal of Organic Chemistry. 2005. V.2005. N6. P.1178-1183. DOI: 10.1002/ejoc.200400559 WOS Scopus РИНЦ OpenAlex
Dates:
| Published print: | Mar 1, 2005 |
Identifiers:
| Web of science: | WOS:000227956400021 |
| Scopus: | 2-s2.0-15944402110 |
| Elibrary: | 13494840 |
| OpenAlex: | W2163147013 |