1988
DOI: 10.1002/chin.198806176
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ChemInform Abstract: Synthesis of Pyrano(thiopyrano)(3,4‐c)pyridine and Pyrano(thiopyrano)‐(3,4‐c)pyran Derivatives.

Abstract: The (thio)pyranylidenemalononitrile (I) reacts with phenyl isothiocyanate (II) to give the (thio)pyranopyridinethione (III) which is treated with hydrazine hydrate (IV), producing the hydrazinopyridines (V) by rearrangement.

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