Preparative Organic Chemistry
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ChemInform Abstract: Intramolecular Diels-Alder Reactions of 2(1H)-Pyrazinones: Synthesis of New Furo/Pyrano-pyridinones and -pyridines.
First published: March 12, 1996
Abstract
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ChemInform Abstract
Intramolecular cycloaddition reaction of alkynyloxy-substituted pyrazinones like (I), (V), and (IX) leads to tricyclic compounds of type (II) which spontaneously or on prolonged heating undergo decomposition yielding furo(pyrano)pyridinones and/or furo(pyrano) pyridines. The outcome is found to depend on the substitution pattern of the anchored pyrazinone.
