Journal
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
Volume 2008, Issue 23, Pages 3907-3911Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejoc.200800472
Keywords
heterocycles; phenols; multi-catalysis reactions; ring closing metathesis
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Funding
- Department of Science and Technology (DST), New Delhi
- Council of Scientific and Industrial Research (CSIR), New Delhi
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A practical and simple one-pot multi-catalysis process for the synthesis of highly substituted benzo[b]oxepines 5, (Z)-2-(buta-1,3-dienyl)phenols 6 and 2-methyl-2H-chromenes 7 from simple starting materials was achieved for the first time through ring-closing metathesis/base-induced ring opening/[1,7]-sigmatropic hydrogen shift reactions. The synthesis of privileged (Z)-2-(buta-1,3-dienyl)phenols 6 via base-induced ring opening of highly functionalized benzo[b]oxepines 5 is described. ((C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008).
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