Title page for etd-0714111-143043


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URN etd-0714111-143043
Author Pei-jyun Lin
Author's Email Address No Public.
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Department Chemistry
Year 2010
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Photolytic Study of 2-Azidomethylthiophene and Its Derivatives;Pyrolytic Study of 3-Cyclohexeno[b]furylmethyl Benzoate
Date of Defense 2011-07-01
Page Count 244
Keyword
  • carbene
  • flash vacuum pyrolysis
  • 2-azidomethylthiophene
  • photolysis
  • nitrene
  • Abstract 1. Generation of nitrenes by means of photolysis of arylmethylazides and its derivatives have been studies. Pyrolysis of 2-azidomethylthiophene(44a) gave 2-thiophenecarboxaldehyde(77a)and (2-thienylmethylidene)-2-thienylamine(45a), and pyrolysis of 2-azidomethylbenzo[b]thiophene(44b)gave the corresponding products. Pyrolysis of 2-azido-1-(2-thienyl)ethanone(52a)gave 2-thiophenecarboxaldehyde(77a), 2-acetylthiophene(80a)and 2-(thiophene-2-carbonyl)amino-1-(2-thienyl)ethanone(83a), and pyrolysis of 2-azido-1-(2-benzo[b]thienyl)ethanone(52b)gave the corresponding products.
    2. Pyrolysis of 3-cyclohexeno[b]furylmethyl benzoate(35)gave cyclohexeno-4-methylenecyclobuten-3-one(25)via highly reactive carbene intermediate. At high temperature, compound 25 can continue the reaction of elimination and ring opening to give benzene(43), fulvene(46), 2-ethylnylcyclohex-1-ene carbaldehyde(44) and 4,5-dimethylenecyclopent-2-enone(45).
    Advisory Committee
  • Cherng-Chyi Tzeng - chair
  • Ming-Jung Wu - co-chair
  • Teng-yuan Dong - co-chair
  • Chin-Hsing Chou - advisor
  • Files
  • etd-0714111-143043.pdf
  • indicate in-campus access in a year and off_campus not accessible
    Date of Submission 2011-07-14

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