We report a robust and recyclable 'dip-catalyst' based on a gold nanoparticle (Au NP)-loaded filter paper composite, prepared by a simple dip-coating process using concentrated Au NP suspensions in toluene. While acting as catalysts, the composites display excellent surface enhanced Raman scattering (SERS) efficiency, allowing the real-time monitoring of chemical reactions.

Mesoporous SBA-15 functionalized with aggregation-induced emission (AIE) luminogens serves as an efficient and recyclable fluorescent sensor for the detection of picric acid (PA), with a quenching constant of up to 2.5 × 10(5) M(-1) in a water solution, presenting a new model for the supersensitive detection of explosives.

Recyclable ( -p-cymene)-ruthenium(II) 2-naphthylazo-p-methylphenolate catalyst of formulation [RuCl( -pcymene)(L)] (where L = mono anionic 2-naphthylazo-p-methylphenolate ligand) is shown to be an efficient catalyst for transfer hydrogenation of a wide range of alkyl and aryl ketones in the presence of 2-propanol and KOH.

A rapid and efficient synthesis of 4,6-Dimethylpyrimidine-2(1H )-one has been carried out from acetylacetone and urea in dry media in the presence of an environmentally friendly non-corrosive, non-toxic and recyclable catalyst in 85% yield under microwave irradiation conditions.

Monoclinic CuO crystallite in grams has been obtained from resin bound Cu(II)-1,10-phenanthroline complex, R(-)[Cu(1,10-phen)(2)](2+) that becomes a recyclable catalyst for oxidative phenol coupling (OPC) reaction. Thus an exclusively intuitive blue fluorescing perylene derivative is derived from colorless 2,7-dihydroxynaphthalene (2,7-DHN) in high yield.

A highly efficient, inexpensive, recyclable, convenient, and green protocol for chemoselective aza-Michael addition reactions of amines/thiols to alpha,beta-unsaturated compounds using silica sulfuric acid (SSA or SiO(2)-SO(3)H) was developed. This method is simple, convenient and the title compounds are produced in good to excellent yields.

A copper-catalyzed method for the oxidation of allylic and benzylic sp(3) C-H by aqueous tert-butyl hydroperoxide (T-Hydro) in water using a recyclable fluorous ligand has been developed. The reaction procedure is tolerant to additional functional groups and the fluorous ligand could be reused with little loss of catalytic activity.

A new method for the rapid and efficient coupling of homopolymers to yield di- and triblock copolymers as well as cyclic polymers using the 3 + 2 π Huisgen copper catalyzed cyclo-addition reaction has been developed. This facile method utilizes commercially available Cu nanoparticles that are tolerant to O(2), easily removable and recyclable.

This review presents a summary of reactions performed using microwave irradiation. This green processes have resulted through use of less or no catalyst, readily recyclable solvents and yield that are often higher than conventional method. It also focus on the principle of microwave activation, various types of Microwave Reactor and its characteristics.

Despite a large number of developments of noble metal (or metal oxide) NP-based catalysts, it has been a great challenge to prepare high-performance recyclable catalysts with integrated functionalities that can be used in various solvent media. Here, we report on layer-by-layer (LbL) assembled multicatalysts with high catalytic performance, showing high dispersion and recycling stability in org...