Direct C–H bond activation of ethers and successive C–C bond formation with benzene by a bifunctional palladium–titania photocatalyst. Issue 12 (25th February 2016)

• Record Type: Journal Article
• Authors: Tyagi, Akanksha; Matsumoto, Tomoya; Kato, Tatsuhisa; Yoshida, Hisao
• Is Part Of: Catalysis science & technology. Volume 6:Issue 12(2016)
• Page Start: 4577
• Page End: 4583
• Publication Date: 2016-02-25
• Subjects: Catalysis -- Periodicals; 541.395
• DOI: 10.1039/c5cy02290h
• Languages: English
• ISSNs: 2044-4753

Abstract

Abstract : Palladium-loaded titania bifunctional photocatalysts promoted a simple reaction between benzene and ethers to yield alpha-arylated ethers with high selectivity without consuming any additional chemicals or solvents under mild conditions. Abstract : Palladium-loaded titanium oxide was found to work as a bifunctional photocatalyst for functionalization of benzene with ether upon photoirradiation, without using any special reagents. The metal-loaded TiO2 photocatalyst activated a C–H bond of ethers and the heterogeneous Pd metal nanoparticle catalyst promoted the successive C–C bond formation between benzene and the radical species. In this reaction, benzene reacted very selectively with the α-carbon of various ethers at least in the initial stage of the reaction. Kinetic and ESR studies revealed a detailed mechanism for the reaction.