The gold-catalyzed aminoalkynylation of alkynes for the synthesis of quinalizinones is reported. For instance, the reaction of pyridinoalkynes with 1-[(triisopropylsilyl)-ethynyl]-1,2-benziodoxol-3(1H)-one (TIPS-EBX) in the presence of a catalytic amount of AuCl at 50 °C afforded alkynylated quinalizinones in 57–87% yields.
P. S. Shinde, A. C. Shaikh and N. T. Patil, Chem. Commun., 2016, 52, 8152 DOI: 10.1039/C6CC03414D
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