A trace amount of metal carbonate, acetate or borate significantly boosts gold nanocatalysts in selective aerobic oxidation of alcohols under mild solvent-free conditions.

Cr-Si binary oxide prepared by a sol-gel method, when activated by visible light, catalyses highly selective oxidation of cyclohexane to cyclohexanone with molecular oxygen.

Selective functionalization of the C–B bond in 1,2-bis(boronate) esters has emerged as a powerful tool to prepare 1,2-difunctionalized compounds with stereocontrol. Suzuki cross-coupling, oxidation, amination, and homologation reactions serve platforms wide variety from common intermediate. The exquisite selectivity offered their easy preparation feedstock material using myriad catalytic transf...

The hydroxylation of fatty acids is an appealing reaction in synthetic chemistry, although the lack selective catalysts hampers its industrial implementation. In this study, we have engineered a highly regioselective fungal peroxygenase for ω-1 with quenched stepwise over-oxidation. One single mutation near Phe catalytic tripod narrowed heme cavity, promoting dramatic shift toward subterminal d...

A transition-metal-free cis-dihydroxylation of saturated hydrocarbons under ambient reaction conditions has been developed. The described approach allows a direct and selective synthesis of vicinal diols. The new reaction thereby proceeds via radical iodination and a sequence of oxidation steps. A broad scope of one-pot dual C(sp3)-H bond functionalization for the selective synthesis of vicinal...

In this research, the selective oxidation of benzene to maleic anhydride (MAN) in a fixed-bed reactor was studied. The gas phase catalytic oxidation of benzene was carried outin a laboratory scale fixed bed reactor on the catalysts, which were prepared having two different compositions on silica gel. The effects of temperature, flow rates of benzene and air, and catalyst type on the reactio...

Abstract In recent years, due to the installation of selective catalytic reduction (Selective Catalytic Reduction, hereinafter referred as SCR) devices, high temperature oxidation failure has occurred frequently in automobile exhaust systems. To explore its mechanism, this paper takes 439 ferritic stainless steel which is often used pipes an example and uses XRD, SEM, EDS experimental methods s...

Oxidation of the catalytic cysteine of protein-tyrosine phosphatases (PTP), which leads to their reversible inactivation, has emerged as an important regulatory mechanism linking cellular tyrosine phosphorylation and signalling by reactive-oxygen or -nitrogen species (ROS, RNS). This review focuses on recent findings about the involved pathways, enzymes and biochemical mechanisms. Both the gene...