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Design and Synthesis of Heterogeneous Nanocatalysts based Metals and their Application in Organic Reactions

Azaryan, Reza | 2020

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 53387 (03)
  4. University: Sharif University of Technology
  5. Department: Chemistry
  6. Advisor(s):
  7. Abstract:
  8. Ferrite spinels are very valuable as heterogeneous catalysts and have the ability to separate. In this dissertation, ferrite nanoparticles were synthesized by co-precipitation method and used in carbon-phosphorus and phosphorus-sulfur bond formation reactions. The structure of these compounds was investigated by different techniques. The ferromagnetic CuFe2O4 ferrite catalyst was expanded in the C-P bond formation reaction, resulting in a convenient and efficient method. Phosphorylation of alkenes was performed using a model reactant, dialkyl phosphite as a source of phosphorous compounds, and beta-ketophosphosphonates were synthesized. Beta-ketophosphonates are important intermediates for the synthesis of many biologically active compounds and products. The nanoparticles used in the reaction are heterogeneous and inexpensive, and can also be recycled and reused. In order to predict the reaction mechanism, control reactions were performed that confirmed the progress of the reaction through radical mediation. In the following, we have the coupling of sulfur-phosphorus bond with the help of these nanocatalysts and for this purpose, compounds of aryl sulfonyl chloride and dialkyl phosphite have been used. As a result of this coupling, compounds of thiophosphate are synthesized They are important and are found in many natural products, medicines, agricultural chemicals. The proposed conditions for the synthesis of thiophosphates led to the emergence of a green method in a short time, because the reaction was carried out under very mild conditions, requiring a time of 3 hours, a temperature of 85°C and free of solvents, bases, ligands and other additives. In addition, for both studies, experimental and computational uv-vis spectra were studied for the first time to find a method and base set
  9. Keywords:
  10. Heterogeneous Nanocatalyst ; Beta-Ketophosphonate ; Ferrite Nanocatalysts ; Dialkyl Phosphite ; Thiophosphate ; Carbon-Phosphorus Bond Formation ; Phosphorus-Sulfur Bond Formation ; Benzene Sulfonyl Chloride ; Spinel Ferrite

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