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  • Title: Rhodium-catalyzed decarboxylative and dehydrogenative coupling of maleic acids with alkynes and alkenes.
    Author: Itoh M, Shimizu M, Hirano K, Satoh T, Miura M.
    Journal: J Org Chem; 2013 Nov 15; 78(22):11427-32. PubMed ID: 24127841.
    Abstract:
    The dehydrogenative coupling of maleic acids with alkynes proceeds smoothly accompanied by decarboxylation under rhodium catalysis to produce variously substituted α-pyrone derivatives. The catalyst system is also applicable to the coupling with 1,3-diynes and alkenes.
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