Current Catalysis - Volume 2, Issue 3, 2013

This article highlights the cascade synthesis of various N-heterocycles and C–N bonding organic transformations catalyzed by a simple and efficient heterogeneous CuII–hydrotalcite (CuII–HT) catalyst. The CuII–HT was found to be a dynamic catalyst and exhibited promising catalytic activity towards one-pot MCRs, namely, synthesis of 1,4- disubstituted 1,2,3-triazoles, synthesis of 2H-indazoles, and C–N bond forming reactions Read More

The tendency in recent decades is to develop environmentally friendly heterogeneous catalytic systems for organic transformations. In particular, chemical reactions cooperatively promoted by solid acid-base bifunctional catalysts with good dispersion of active sites and high catalytic performances have aroused much attention. In this review, recent advances in preparation and application of solid acid-base bifunction Read More

Nano-sized silver doped Mn2O3 was synthesized by starch assisted co-precipitation technique. The prepared samples were tested for CO oxidation reaction. Ag doped Mn2O3 sample was found to show higher activity then pristine Mn2O3. XRD patterns authenticate the formation of Mn2O3 phase. Electron microscopy images show that the particles are in nano-sized, agglomerated and 40 - 70 nm in range. Thermal analysis Read More

A Brönsted acidic ionic liquid catalyst with a sulfonic acid group tethered to imidazolium cation, and immobilized on polystyrene was prepared by a two step method in 83% overall yield. This immobilized Bronsted acidic ionic liquid catalyst was shown to be a significantly better catalyst than H+ form of Dowex-50X8 of similar SO3H group loading for hydrolysis of untreated Sigmacell cellulose (DP ~ 450) in water under hydrother Read More

Immobilization of enzymes on suitable supports is an interesting area of investigation to increase their application spectrum in the synthetic, therapeutic and biosensor fields. In the present study, a new series of nanogels was used for the immobilization of glucose oxidase (GOx). Nanogels based on poly(acrylic acid) cross-linked with N,N-methylene bisacrylamide were synthesized using a surfactant free emulsification meth Read More

The catalytic activity of the dichlorodioxomolybdenum (MoO2Cl2·2DMSO) complex was investigated for oxidation of aromatic alcohols to corresponding aldehydes using dimethyl sulfoxide (DMSO) as an oxidant under solvent free conditions. The catalyst showed very high conversion and selectivity for aldehyde with high turnover number up to 1000 and high turnover frequency. For substituted benzyl alcohols there wa Read More

A protocol describes the synthesis of naphtha-1,3-oxaizine derivatives via one-pot multi-component reaction of α-naphthol, formaldehyde and various substituted anilines catalyzed by L-proline as an efficient catalyst. A method offers delightful advantages such as mild reaction conditions, environmentally benign, easy experimental workup and good to excellent yields.