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Keywords:

  • C[BOND]S bond formation;
  • gold;
  • Lewis acids;
  • Markovnikov addition;
  • vinyl sulfones

Abstract

A general method for the synthesis of α-substituted vinyl sulfones makes use of a combination of a triazole gold complex and gallium triflate. This efficient C[BOND]S bond formation between simple terminal alkynes and sulfinic acids provides access to various α-substituted vinyl sulfones.