Gold nanoparticle-catalysed functionalization of carbon-hydrogen bonds by carbene transfer reactions
DALTON TRANSACTIONS(2022)
摘要
Gold nanoparticles stabilized by NHC ligands and supported onto reduced graphene oxide (rGO) catalyse the functionalization of cyclohexane and benzene C-H bonds upon insertion of carbene CHCO2Et (from N-2=CHCO2Et) groups. This is the first example in which such C-sp3-H or C-sp2-H bonds are functionalized with this strategy with nanoparticulated gold. This Au-NP@rGO material shows an exceptional activity, providing TON values 5-10 times higher than those already reported for molecular gold catalysts. Recyclability is also effective, reaching an accumulated TON value of 1400 after six consecutive uses.
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