Recoverable catalysts . Ultimate goals , criteria of evaluation , and the green chemistry interface *
نویسنده
چکیده
Attempts are made to define the “ideal synthesis”, “ideal catalyst”, and “ideal recoverable catalyst”. Although these unattainable limits can never be realized, they help to focus attention on attributes chemists should strive for. Criteria for evaluating catalyst recovery are analyzed, and increased attention to the critical and constructive evaluation of competing “green” chemical technologies is advocated.
منابع مشابه
Efficient Synthesis of 2, 3-Dihydroquinazolin-4(1H)-ones in the Presence of Ferrite/Chitosan as a Green and Reusable Nanocatalyst
In this work, an efficient and facile method has been developed for the synthesis of 2,3-dihydroquinazolin-4(1H)-ones from a condensation reaction of 2-aminobenzamide with various alkyl,aryl and alicyclic aldehydes or ketones using Fe3O<span class="fontstyle0" styl...
متن کاملOne-pot reductive Amination of Carbonyl Compounds using NaBH4 and Fe3O4 Magnetic Nanoparticles
One-pot reaction of aldehydes or ketons with aniline derivatives was performed using NaBH4 and Fe3O4 magnetic nanoparticles (MNPs). The optimum amount of Fe3O4 MNPs was 5 mol% under solvent free condition. The corresponding products were obtained in good to excellent yields. The magnetically recoverable iron oxide nanoparticles are found to be efficient for synthesis of amine derivatives. These...
متن کاملReusable Silica supported Perchloric acid and potassium bisulphate as green catalysts for thiocyanation of aromatic compounds under solvent free conditions
Reusable silica supported perchloric acid and potassium bisulphate have been prepared and explored as green catalysts for thiocyanation of aromatic compounds under conventional and solvent free microwave assisted conditions. The microwave assisted protocol exhibited remarkable rate accelerations and offered selective thiocyanation of aromatic and hetero aromatic compounds in good yields. Reacti...
متن کاملSynthesis of New N-phenyl Fulleroisoxazoline in the Presence of Fe3O4@SiO2 Nanoparticles as an Efficient Magnetically Recoverable and Reusable Catalyst
In this research an effective and appropriate method has been developed for one-pot synthesis of new N-phenyl fulleroisoxazoline using Fe3O4@SiO2 nanoparticles as a green magnetically recyclable catalyst. The prepared catalytic samples were characterized by XRD, SEM, FT-IR and VSM. The products have been characterized by physical and spectroscopic data such as IR, 1H NMR, 13C NMR, and MS analyses.
متن کامل-Fe2O3@SiO2-PW12 nanoparticles: Highly efficient catalysts for the synthesis of pyrazoline derivatives
A new type of magnetically-recoverable catalyst was synthesized by the immobilization of H3PW12O40 on the surface of silica-encapsulated -Fe2O3 nanoparticles. A series of novel 1,3,5-triaryl pyrazoline derivatives has been synthesized by the reaction of chalcone and phenylhydrazine in the presence of the -Fe2O3@SiO2-PW12nanoparticles, in high yields. The structures of compounds obtained were...
متن کامل