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

Abstract

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.

A search for blues brothers: X-ray crystallographic/spectroscopic characterization of the tetraarylbenzidine cation radical as a product of aging of solid magic blue

“…Based on the predictions from the (TD-)DFT calculations we undertook the synthesis of TAB and its brominated derivatives 6–9 as well as carbazole derivatives 4 and 5 using standard literature procedures, 26–36 and all synthetic details are included in the ESI. All compounds were characterized by 1 H/ 13 C NMR spectroscopy as well as by MALDI spectrometry.…”

Palladium and Copper Catalyzed Sonogashira cross Coupling an Excellent Methodology for C-C Bond Formation over 17 Years: A Review

“…Numerous methods have been reported for the synthesis of Ar-ethynyl-TAA by Sonogashira coupling using Pd and Cu which were applied in low yields of products at long reaction times. Thus, Safaei-Ghomi and coworkers developed an efficient method for the preparation of various derivatives of Aryl ethynyl linked triarylamines via Sonogashira cross coupling using Pd/Cu nanoparticles under ultrasonic irradiation [124]. This solvent-free method offers several advantages such as high yields, green procedure, short reaction times.…”

Ultrasound assisted eco-friendly synthesis of 3-cinnamoyl coumarins using N,N'-(1,2-phenylene)bis(2-aminobenzamide) dichloro cobalt immobilized on mesoporous Al-SBA-15 as a new and recyclable catalyst

“…heterogeneous catalysis, enzymatic reactions, using ion exchange resin, phase transfer catalysis and biphasic reactions) (20)(21)(22)(23)(24). The application of ultrasonic technique in organic synthesis has plentiful significant advantages such as milder reaction condition, lower reaction length, higher efficiencies of products, nontoxic and environmental friendly solvent, minimization of side products, saving money and energy in comparison with the conventional heating methods (25)(26)(27)(28)(29). In fact, ultrasound irradiation accelerates numerous reactions by means of the making, development and implosive bubbles collapse in liquid phase (30).…”