• About
  • Policies
  • What is open access
  • Library
  • Contact
Advanced search
      View Item 
      •   BUIR Home
      • University Library
      • Bilkent Theses
      • Theses - Department of Chemistry
      • Dept. of Chemistry - Master's degree
      • View Item
      •   BUIR Home
      • University Library
      • Bilkent Theses
      • Theses - Department of Chemistry
      • Dept. of Chemistry - Master's degree
      • View Item
      JavaScript is disabled for your browser. Some features of this site may not work without it.

      Transition metal catalysis for aerobic C-H oxidation reactions and for the synthesis of fluoranthene derivatives

      Thumbnail
      Embargo Lift Date: 2021-08-02
      View / Download
      5.6 Mb
      Author(s)
      Şahin, Yeşim
      Advisor
      Türkmen, Yunus Emre
      Date
      2021-01
      Publisher
      Bilkent University
      Language
      English
      Type
      Thesis
      Item Usage Stats
      153
      views
      65
      downloads
      Abstract
      Within the past two decades, a powerful class of new reactions that introduces oxidized functionality to (sp3) C-H bonds has emerged and gained tremendous attention since it can revolutionize the chemical industry by placing reactive functional groups directly in a molecule. Usually, precious metals (e.g., Pd, Pt, Ru etc.) are used for the activation of C-H bonds, and finding alternative ways that use less expensive and less toxic first row transition metals to replace precious metal catalysts is necessary. In this work, we have developed a reductive pretreatment system to increase the activity of precious metal-free LaMnO3 perovskites for C-H oxidation reactions of alkylarenes to ketones or oxidative dimerization of naphthols under mild conditions. Furthermore, a bimetallic nickel-manganese based hydroxide catalyst was synthesized as well and it was proven to oxidize a variety of alkylarenes and alcohols. Using molecular oxygen as the sole oxidant in C-H oxidation reactions is another advantage of our method since it is green, inexpensive and readily available in nature. In the second part, two novel methods have been developed for the synthesis of fluoranthenes which are important polycyclic skeletons. They can be found in many natural products, organic electronics, dyes and various materials. These methods employ Pd-catalyzed cross-coupling reactions such as Suzuki-Miyaura and Sonogashira reactions in the first steps using 1,8-dihalonaphthalenes and then use intramolecular Diels-Alder reactions for the formation of tetracyclic ring in the fluoranthene core. Our methods also provide a modular pathway for the synthesis of multi-substituted fluoranthene derivatives from simple molecules because it is designed as a three-component system and each component can be readily prepared or functionalized allowing easy modification.
      Keywords
      Aerobic C-H oxidation
      Heterogenous catalysis
      Perovskite
      Metal hydroxide
      Fluoranthene
      Permalink
      http://hdl.handle.net/11693/55016
      Collections
      • Dept. of Chemistry - Master's degree 143
      Show full item record

      Browse

      All of BUIRCommunities & CollectionsTitlesAuthorsAdvisorsBy Issue DateKeywordsTypeDepartmentsCoursesThis CollectionTitlesAuthorsAdvisorsBy Issue DateKeywordsTypeDepartmentsCourses

      My Account

      Login

      Statistics

      View Usage StatisticsView Google Analytics Statistics

      Bilkent University

      If you have trouble accessing this page and need to request an alternate format, contact the site administrator. Phone: (312) 290 2976
      © Bilkent University - Library IT

      Contact Us | Send Feedback | Off-Campus Access | Admin | Privacy