Copper-catalyzed three-component coupling of arynes, terminal alkynes and activated alkenesElectronic supplementary information (ESI) available: General experimental procedure, spectral data (1H, 13C NMR and HRMS) and copies of 1H and 13C NMR spectra of all compounds. See DOI: 10.1039/b809409h

The three-component coupling of benzynes with terminal alkynes and activated alkenes in the presence of CuI, PCy3and CsF in a 1 : 1 mixture of CH3CN and THF at 50 °C for 5 h gave 1-alkyl-2-alkynylbenzenes in good to moderate yields. [ABSTRACT FROM AUTHOR]