Ru-based oxidation catalysis

Abstract

Ranging from the oxidative conversion of water to O(2) to the elegant hydroxylation of olefins and to oxidative dehydrogenation of alcohols Ru-mediated oxidations are finding increasing application due to the unique properties of this extremely versatile transition metal, whose oxidation state can vary from -II to +VIII. Covering recent developments in both homogeneously and heterogeneously catalysed oxidations (in liquid-phase as well as in novel reaction media), this tutorial review aims to provide investigators with a general picture of the chemical and structural origins of the excellent performance of many ruthenium catalysts and to promote further advancement that, it is envisaged, will soon benefit society at large.

Tetra-N-propylammonium Perruthenate (TPAP)

“…The full potential of TPAP was revealed when its catalytic behavior with N-methylmorpholine N-oxide (NMO) as terminal oxidant was uncovered. 3 It is stable at room temperature and may be stored for long periods under lowtemperature condition. The TPAP-O 2 oxidizing system meets several principles of Green Chemistry 4 and raises the prospect for industrial oxidations because of (i) its applicability in oxidation of a wide range of alcohols, (ii) its potential as terminal oxidant with air, (iii) the simple separation of the catalyst from the products, and (iv) its chemoselectivity and tolerance against many functional groups.…”

Synthesis, Characterization, and Relative Study on the Catalytic Activity of Zinc Oxide Nanoparticles Doped MnCO3, –MnO2, and –Mn2O3 Nanocomposites for Aerial Oxidation of Alcohols

“…Selective catalytic oxidation of alcohols to corresponding carbonyl compounds is one of the most pivotal functional group transformations in organic chemistry [1][2][3][4][5][6]. The oxidation products such as aldehyde and ketone derivatives are important precursors and intermediates in the cosmetics, perfumery, flame-retardants, insecticides, confectionary, biofuels, and pharmaceutical industries [7][8][9][10][11].…”

Electrochemical Oxidation of 1,2-Diols to ^|^alpha;-Hydroxyketones in Water

“…3 Accordingly, the use of water as reaction medium is highly desirable as water is a readily available, safe and environmentally friendly solvent which is currently finding a number of surprising applications in synthetic chemistry. 4 Research efforts in the field of alcohol oxidation have lately resulted in a number of aerobic heterogeneous metal catalysts of impressive selective activity, mostly based on Ru, 5 Pd, 6 and Sn 7 catalysts. Of more importance to organic synthesis is the selective oxidation of 1,2-diol moiety to A-hydroxyketones.…”