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Identifier 000423773
Title Σύνθεση πυριδινών με οξειδωτική σύζευξη συζυγιακών αλλενονών και αλκυνυλαμινών καταλυόμενη από νανοσωματίδια Au
Alternative Title Synthesis of pyridines via oxidative coupling of conjugated allenones with alkynylamines catalyzed by Au nanoparticles
Author Φραγκιαδάκης, Μιχαήλ Π.
Thesis advisor Στρατάκης, Εμμανουήλ
Reviewer Βασιλικογιαννάκης, Γεώργιος
Λυκάκης, Ιωάννης
Abstract In the present scientific dissertation is presented a methodology for the synthesis of substituted pyridines through cyclization of N-1,5- and N-1,6-enynes catalyzed by Au/TiO2. The enynes were prepared by nucleophilic addition of propargyl and 3-butynyl amines into allenones to form N-1,5 and N-1,6 enynes, respectively. This is a two step one-pot reaction. It is proposed that the triple bond of the enyne is activated on the Au nanoparticle and is followed either by 6-endo cyclization in the case of N-1,5-enynes, or 6-exo cyclization in the case of N-1,6-enynes. The initially formed cyclization products (dihydropyrines) undergo fast oxidation/aromatization to yield pyridines, with O2 as oxidatant. This step is also catalyzed by the Au nanoparticles.
Language Greek
Subject Au/TiO2
Ετερογενής κατάλυση
Ηeterogeneous catalysis
Issue date 2019-07-24
Collection   School/Department--School of Sciences and Engineering--Department of Chemistry--Post-graduate theses
  Type of Work--Post-graduate theses
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