A Base-Promoted Tandem Reaction of 3-(1-Alkynyl)chromones with 1,3-Dicarbonyl Compounds: An Efficient Approach to Functional Xanthones.
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Angew Chem Int Ed Engl. 2009 Jul 23; Zhao L, Xie F, Cheng G, Hu Y
Angew Chem Int Ed Engl. 2009 Jul 23; Zhao L, Xie F, Cheng G, Hu Y