Zhou Ju-feng
2010
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Journal
Journal of Southwest University
Abstract
Four 2-ynyl-benzofurans were synthesized by the reaction of 2-ethynylaniline and E-1,2-diiodoalkenes in the presence of palladium (II) acetate and copper (I) iodide as the catalysts via a one-pot reaction in a triethylamine-tetrahydrofuran medium. The reaction at room temperature for 15 h and then at 100 ℃ for the remaining time gave the desired 2-ynyl-benzofurans in moderate yields under mild conditions. The structures of the product were characterized and confirmed by MS and NMR spectrum.