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Gas-phase pyrolytic reactions. Part 6. [1] Behavior of ethyl (hetero)arylcarboxylate esters in thermal elimination reactions (1997)

Al-Awadi, Nouria A. ; El-Dusouqui, Osman M. E. ; Mathew, Tommy

New York, NY : Wiley-Blackwell

International Journal of Chemical Kinetics 29 (1997), S. 289-293

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ISSN: 0538-8066

Keywords: Chemistry ; Physical Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: Rates, Arrhenius parameters, and Hammett substituent constants are obtained for the gas-phase thermal elimination of ethyl benzoate (1) and ethyl 2 - thienyl - (2), 3 - thienyl - (3), 2 - furyl - (4), 3 - furyl - (5), 4 - pyridyl - (6), 3 - pyridyl - (7), and 2 - pyridylcarboxylate (8) esters. The log A/s-1 and the Ea/kJ mol-1 values of these esters averaged 13.60 and 216.3, respectively. The present results are compared with data previously reported for the corresponding isopropyl and t-butyl analogues, and the findings are rationalized in terms of a plausible transition state for the elimination pathway. © 1997 John Wiley & Sons, Inc. Int J Chem Kinet 29: 289-293, 1997.

Additional Material: 4 Ill.

Type of Medium: Electronic Resource

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