Selective hydrogenation of nitroarenes using an electrogenerated polyoxometalate redox mediator

Selective hydrogenation of nitroarenes using an electrogenerated polyoxometalate redox mediator.

The 2-electron reduced form of the polyoxometalate silicotungstic acid (H4[SiW12O4]) is shown to be an effective and selective hydrogenation agent for a range of nitroarenes without the need for any co-catalyst. The ease of generation of the active species and its recyclability suggest that a new approach to this important class of chemical conversions is possible.

Catalyst Development for Selective Hydrogenation of Functionalized Alkynes and Nitroarenes

Carbon supported Pt colloid as effective catalyst for selective hydrogenation of nitroarenes to arylhydroxylamines.

The Pt colloid supported on carbon is an active and selective catalyst for the partial hydrogenation of nitroaromatics with electron-withdrawing substituents to the corresponding N-arylhydroxylamine, indicating an additive-free green catalytic approach for arylhydroxylamine synthesis.

Reversible redox reactions in an extended polyoxometalate framework solid.

Extended modular frameworks that incorporate inorganic building blocks represent a new field of research where “active sites” can be engineered to respond to guest inclusion. This process can initiate highly specific chemical reactions that switch the overall nature of the framework, and it may even be developed to facilitate directed chemical reactions similar to those found in enzymatic syste...

Selective precipitation of prions by polyoxometalate complexes.

The efficacy of a variety of polyoxometalate anions in selectively precipitating the infectious isoform of the prion protein (PrPSc) over the normal, cellular protein (PrPC) was tested as a means of improving the sensitivity of a conformation-dependent immunoassay (CDI). Experiments utilizing neutralized aqueous solutions containing MgCl2.6H2O and Na2H[PW12O40] (1) indicated that use of the for...