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Keywords:

  • alkynes;
  • gold;
  • pyrrolo-/pyrido[2,1-b]benzo[d][1,3]oxazin-1-ones;
  • tandem reactions

Abstract

A highly efficient method has been developed for the one-pot synthesis of multi-ring heterocyclic compounds such as pyrrolo-/pyrido[2,1-b]benzo[d][1,3]oxazin-1-ones from o-aminobenzyl alcohols via a gold(I)-catalyzed tandem coupling/cyclization reaction. Significantly, the strategy presents a straightforward and efficient approach to construct novel tricyclic or polycyclic molecular architectures in which two new C[BOND]N bonds and one C[BOND]O bond are formed in a one-pot reaction operation from two simple starting materials. Moreover, a broad spectrum of substrates can participate in the process effectively to produce the desired products in good yields.