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http://hdl.handle.net/11375/23592
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DC Field | Value | Language |
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dc.contributor.advisor | Bourne, A. N. | - |
dc.contributor.author | Wong, Edward | - |
dc.date.accessioned | 2018-11-27T14:42:50Z | - |
dc.date.available | 2018-11-27T14:42:50Z | - |
dc.date.issued | 1961-09 | - |
dc.identifier.uri | http://hdl.handle.net/11375/23592 | - |
dc.description.abstract | The kinetics of the thermal decarboxylation of a series of substituted sodium phenylpropiolates were studied in detail. The reaction proceeded without formation of significant amounts of side products: its rate was independent of hydrogen ion concentration. The relative rates of decarboxylation are in the order: p-NO2 > m-NO2> m-CF3 > m-Cl > p-Cl > H > m-CH3, and the entropies of activation are large and positive. The results were discussed in terms of the unimolecular (SE1) mechanism. A quantitative study of effects of substituents on the decarboxylation rates was made by the application of the Hammett free energy relationship. The e value of the Hammett plot was 0.886 +/- 0.013. Deviation of para substituted compounds from the Hammett relationship were discussed in terms of para interaction or conjugation effects in the initial or the transition states. | en_US |
dc.language.iso | en | en_US |
dc.subject | kinetic | en_US |
dc.subject | thermal decarboxylation | en_US |
dc.subject | decaroboxylation | en_US |
dc.subject | sodium phenylpropiolates | en_US |
dc.title | Kinetic Study of Thermal Decarboxylation of Substituted Sodium Phenylpropiolates | en_US |
dc.title.alternative | Decarboxylation of Substituted Sodium Phenylpropiolates | en_US |
dc.type | Thesis | en_US |
dc.contributor.department | Chemistry | en_US |
dc.description.degreetype | Thesis | en_US |
dc.description.degree | Master of Science (MS) | en_US |
Appears in Collections: | Digitized Open Access Dissertations and Theses |
Files in This Item:
File | Description | Size | Format | |
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wong_edward_w_c_1961Sep_masters.pdf | 32.97 MB | Adobe PDF | View/Open |
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