Tetrahedron Letters p. 2165 - 2168 (1995)
Update date:2022-08-05
Topics:
Acosta, A.
Cruz, P. de la
Miguel, P. De
Diez-Barra, E.
Hoz, A. de la
et al.
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.
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