Sonochemically synthesis of arylethynyl linked triarylamines catalyzed by CuI nanoparticles: A rapid and green procedure for Sonogashira coupling

•Ultrasonic assisted synthesis of copper iodide nanoparticles.•We used nano CuI as efficient catalyst for the synthesis of arylethynyl linked triarylamines.•The products were synthesized in short times and high yields under ultrasonic irradiation.

A simple and green method was performed to the preparation of copper iodide nanoparticles by ultrasound approach. Consequently the synthesis of aryl ethynyl linked triarylamines was carried out through the Sonogashira coupling between iodo-substituted triarylamine and aryl acetylenes in the presence of CuI nanoparticles/Pd(PPh3)2Cl2 as an efficient catalytic system and triethylamine as the base under ultrasonic irradiation. Good to excellent yields of products and short reaction times are some of the important advantages of this solvent free protocol which were attained by both nano CuI and ultrasound conditions.

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