Microwave assisted synthesis of heterocyclic fused quinones in dry media

Microwave assisted cyclization of several 2-thenoylbenzoic acids 2 catalysed with clays in dry media is studied. Some clays were tested and Montmorillonite K-10, free of quarz and feldspar, was shown to be an effective catalyst for their easy conversion into the corresponding heterocyclic fused quin...

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Published inTetrahedron letters Vol. 36; no. 12; pp. 2165 - 2168
Main Authors Acosta, A., de la Cruz, P., De Miguel, P., Diez-Barra, E., de la Hoz, A., Langa, F., Loupy, A., Majdoub, M., Martín, N., Sanchez, C., Seoane, C.
Format Journal Article
LanguageEnglish
Published OXFORD Elsevier Ltd 20.03.1995
Elsevier
Subjects
Chemistry
Chemistry, Organic
Physical Sciences
Science & Technology
ANTHRAQUINONE
ORGANIC METALS
ELECTRON-ACCEPTORS
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Summary:Microwave assisted cyclization of several 2-thenoylbenzoic acids 2 catalysed with clays in dry media is studied. Some clays were tested and Montmorillonite K-10, free of quarz and feldspar, was shown to be an effective catalyst for their easy conversion into the corresponding heterocyclic fused quinone in good yields. A specific effect of microwave irradiation accelerating the reaction with respect to conventional heating in the same conditions is observed. Microware assisted synthesis of quinones 3 catalysed with clays in dry media is described. A specific effect of microware is observed.
ISSN:0040-4039
1873-3581
DOI:10.1016/0040-4039(95)00202-N