Pyrazole elimination and vinyl bromide were found as products in the Flash Vacuum Pyrolysis of (p-Bromo ethyl)-pyrazole. To obtain kinetic parameters (E,) we carried out competitive reactions using (p-chloro ethyl)-pyrazole as an internal standard. A thermochemical study to calculate A(AH,? for this
Kinetics of the gas-phase thermal elimination of (β-chloro ethyl)-pyrazole
✍ Scribed by Jorge Daniel Perez; Leonardo Miguel Phagouape
- Publisher
- John Wiley and Sons
- Year
- 1988
- Tongue
- English
- Weight
- 246 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0538-8066
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✦ Synopsis
Flash vacuum pyrolysis of (p-chloro ethyl)-pyrazole was studied. Pyrazole elimination and vinyl chloride formation were found. Competitive reactions with (p-chloro ethyl)-pyrazole were carried out using N-ethyl-3,5-dimethyl pyrazole as internal standard to obtain the kinetic parameters (Ea). A(bHf") for this reaction was calculated.
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Flash Vacuum Pyrolysis of (a-phenylethyl) and (P-phenylethy1)-pyrazole were studied. Pyrazole and Styrene were found as only products of both reactions. The kinetic parameters obtained reinforce the results previously found about the poor influence of the substitutents on the LY and p carbons of the
The kinetic study of the gas-phase thermal elimination reactions of N-ethyl-3,5 dimethyl-pyrazole ( I ) , N-ethyl-pyrazole ( I I 1, N-sec-butyl-pyrazole ( I I I 1, and N-tert-butyl-pyrazole (IV) using a flow system is reported. After obtaining activation parameters for I we carried out competitive r
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