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Synthesis 1992; 1992(7): 690-693
DOI: 10.1055/s-1992-26201
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Synthesis of 3,3a,4,6a-Tetrahydro-6a-methyl-2-oxo-2H-cyclopenta[b]furans from (2E,4E,6E)-2-Methoxycarbonyl-4-methylalka-2,4,6-trienoic Acids

A. Valla* , M. Giraud
  • *Laboratoire de Chimie du Muséum National d'Histoire Naturelle, Chimie et Biochimie des Interactions Fongiques et Microbiennes, (URA 401 CNRS), 63, rue Buffon, F-75231, Paris Cedex 05, France
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Publication Date:
17 September 2002 (online)

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Thermal activation of 2-methoxycarbonyl-4-methylalka-2,4, 6-trienoic acids 1 affords bicyclic α-carboxy-γ-lactone esters (methyl 3,3a,4,6a-tetrahydro-6a-methyl-2-oxo-2H-cyclopenta[b] furan-3-carboxylates, 2) in high yields.

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