Recyclable Copper Indium Sulfide Quantum Dots for Photocatalytic Homocoupling of Arenediazonium Tetrafluoroborates

Visible light-driven C–H arylation of heteroarenes with aryl diazonium salts in water catalyzed by a Z-scheme CuInS2/K-C3N4 heterojunction

“…The CuInS 2 QDs were synthesized by the hydrothermal method using copper( ii ) and indium( iii ) salts as precursors and sodium sulfide as the sulfur source under alkaline conditions. 35 The K-C 3 N 4 was prepared by the thermal polycondensation reaction using dicyandiamide and KI as precursors. 36 Finally, the CuInS 2 /K-C 3 N 4 heterojunction was synthesized by ultrasonic treatment of a mixture of CuInS 2 and K-C 3 N 4 in water.…”

“…38-0777). 35 The characteristic peak at 28° can match K-C 3 N 4 in the (1 1 0) plane (JCPDS no. 50-1512).…”

Visible light-induced FeCl3-catalyzed chlorination of C–H bonds with MgCl2

“…However, the chlorination of C–H moieties with inorganic chloride salt as a chlorinating agent under the cocatalysis of Fe and visible light has not been reported. Driven by these problems and in view of our interest in developing new green synthesis methods for organic transformation, 36 herein, we report an Fe catalytic system of any noble metal-free for the photocatalytic chlorination of C–H using MgCl 2 as a chlorine source under mild conditions without a strong oxidant (Scheme 1C). This method can be applied to the chlorination of a broad range of substrates with high selectivity (>90%) and (>87%) conversion.…”