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      Synthesis of Switchable Diazobenzene Nano-compounds, Fries type rearrangement of Carbonates and Ethers, Synthesis of Dicyano Stillbenes, Aromatics Bromination, Synthesis of Benzothiazoles and Thiophenes

      , Ph.D. Dissertation Sharif University of Technology Zargarani, Dordaneh (Author) ; Matloubi Moghaddam, Firouz (Supervisor)
      Abstract
      In this project, Fries rearrangement of aryl benzyl ethers and ary benzyl carbonates, using catalyst and microwave irradiation in solvent-less system have been studied, and Benzylated phenols which have attracted a great deal of interest, due to their medicinal properties, were synthesized. The solvent-free Fries reactions have many advantages such as: reduced pollution, low costs, and simplicity in process and handling. We report the use of N-benzyl DABCO tribromide as an electrophilic bromine source and one of the OATBs for one-step oxidative coupling procedure of benzyl cyanides into Symmetrical α,ά -dicyanostilbenes. The reaction proceeds easily with higher yields and shorter reaction... 

      Solvent-free synthesis of tri-substituted thiophenes via thio-Claisen rearrangement under microwave irradiation: A convenient route to novel tertiary 2-thienyl amines

      , Article Journal of Sulfur Chemistry ; Volume 26, Issue 4-5 , 2005 , Pages 331-335 ; 17415993 (ISSN) Matloubi Moghaddam, F ; Zali Boeini, H ; Zargarani, D ; Sharif University of Technology
      2005
      Abstract
      A solvent-free, solid-supported, and microwave-assisted thio-Claisen rearrangement of S-propargylated thioamides having an activated α-methylene group has been developed. The methodology could be used successfully for the synthesis of tri-substituted thiophenes and sulfur containing triarylamines. The reaction takes place in short time and in good isolated yield. © 2005 Taylor & Francis  

      N-benzyl-DABCO-tribromide as an efficient and mild reagent for deprotection of dithioacetals

      , Article Synthetic Communications ; Volume 36, Issue 8 , 2006 , Pages 1093-1096 ; 00397911 (ISSN) Moghaddam, F. M ; Boeini, H. Z ; Zargarani, D ; Bardajee, G. R ; Sharif University of Technology
      2006
      Abstract
      N-Benzyl-DABCO-ammonium tribromide was found to be an efficient and recyclable reagent for the deprotection of dithioacetals in dichloromethane/ methanol at room temperature. The reaction can be performed cleanly, in short time, and in high yield. Copyright © Taylor & Francis Group, LLC  
    Total 3 records