Abstract
We have developed a novel regioselective method for synthesis of substituted spiro([1]benzopyran-2,4'-(1'H)pyrimidine)-2'-(3'H)thiones and spiro([1]benzopyran-2,4'-(1'H)pyrimidin)-2'-(3'H)ones having one or two hydroxyl groups on the benzene ring.
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Filimonov, S.I., Vaganova, E.I. Synthesis of Substituted Hydroxyspiro([1]benzopyran-2,4'(1'H)-pyrimidine)-2'(3'H)thiones and Hydroxyspiro-([1]benzopyran-2,4'(1'H)-pyrimidin)-2'(3'H)ones. Chemistry of Heterocyclic Compounds 39, 233–237 (2003). https://doi.org/10.1023/A:1023728726912
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DOI: https://doi.org/10.1023/A:1023728726912