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  • Title: Regiocontrolled construction of furo[3,2-c]pyran-4-one derivatives by palladium-catalyzed cyclization of propargylic carbonates with 4-hydroxy-2-pyrones.
    Author: Yoshida M, Nakagawa T, Kinoshita K, Shishido K.
    Journal: J Org Chem; 2013 Feb 15; 78(4):1687-92. PubMed ID: 23363421.
    Abstract:
    The reaction of propargylic carbonates with 4-hydroxy-2-pyrones in the presence of a palladium catalyst is described. By the choice of the reaction temperature, two types of the substituted furo[3,2-c]pyran-4-one derivatives were regioselectively synthesized, respectively.
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