Abstract
In this Letter, we describe a simple and efficient general methodology for CuI/bis(2-pyridyl)diselenoether-catalyzed C–S coupling reactions of aryl halides with thiols using glycerol as an environmentally friendly solvent. The products were obtained in moderate to excellent yields. The performance of CuI/L3-catalyzed C–S coupling reactions in glycerol is comparable to the related cross-coupling reactions in common organic solvents using transition-metal salts as catalyst. The use of the system CuI/L3/glycerol related in this work offers the possibility of performing the reaction in the absence of toxic organic solvents, expensive metals and using ultrasound as an alternative energy source.
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