Immobilization of Pd Nanoparticles on Functionalized SBA-15 and a Robust Mesoporous Catalyst for Reduction and Oxidation Reactions and Synthesis of Tetrasubstituted Pyrroles Via Multicomponent Reactions

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Kalvani, Pedram | 2017

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 50051 (03)
University: Sharif University of Technology
Department: Chemistry
Advisor(s): Matloubi Moghaddam, Firouz
Abstract:
In first part Mesoporous silica (SBA-15) was synthesized by template synthesis method and the surface of SBA-15 was functionalized with 3-glycidoxypropyltrimethoxysilane and 5-Phenyl-1H-tetrazole. Palladium nanoparticles were immobilized on the aforementioned mesoporous support. Characterization of catalyst regarding to its structure, morphology and other parameters was investigated by physiochemical analysis such as XRD, SEM, TEM, and TGA. This heterogeneous catalyst has high capability in reduction of nitrobenzenes and selective oxidation of primary alcohols which respectively gain aminoarenes and benzaldehydes in high yields. Reduction and oxidation reactions are done in water as a green solvent. In second part by using of new method we synthesized wide range of tetrasubstituted pyrroles. In this method for first time by using three substrates: 4-hydroxycumarin, 6-amino-1-methyl uracil and phenylglyoxal monohydrate and their derivatives, substituted pyrroles were synthesized in mild conditions. Most important point in this section of work is catalyst-ftee synthesis of pyrroles
Keywords:
Reduction (Chemistry) ; Oxidation ; Mesoporous Silica ; Nanoparticles ; Palladium Nanoparticle ; Multicomponent Reaction

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