The Reaction of Trimethylsilylethynyl(phenyl)iodonium Triflate with Some Phenolates: Formation of Substitution and sp2 C-H Insertion Products

Abstract

Treatment of trimethylsilylethynyl(phenyl)iodonium triflate with the potassium salts of some acidic phenols results in the formation of substitution products (O-trimethylsilylethynylphenols and/or O-ethynylphenols), along with sp2C-H insertion products which afford eventually 2-aroxybenzo[b]furans.

Keywords

• Alkynyl iodonium salts
• ethynyl phenyl ethers
• benzo[b]furans