2026-09-25T12:05:40Zhttps://mro.massey.ac.nz/server/oai/requestoai:mro.massey.ac.nz:10179/131092025-11-11T14:22:21Zcom_10179_294col_10179_296
DSpace at Massey University
author
Woodhead, John Leslie
2018-04-17T20:05:49Z
2018-04-17T20:05:49Z
1974
http://hdl.handle.net/10179/13109
Q112840671
https://www.wikidata.org/wiki/Q112840671
The primary kinetic isotope effects for the base-catalysed E2 elimination from a series of substituted 2-phenethyl bromides and 2-phenethyldimethylsulphonium bromides in dimethyl sulphoxide-water as solvent at 20° have been measured. A broad maximum in the isotope effect was observed for the 2-phenethyl bromides. The Hammett p value for each reaction series at 20° has also been determined and both were large and positive. Arrhenius plots using the kH/kD ratios for each of the p-MeO substituted compounds at 20°, 30° and 40° were carried out to determine the importance of proton tunnelling in these reactions. The usefulness of the primary Kinetic isotope effect as a measure of proton position in the E2 transition states for these reactions is discussed.
en
The Author
Chemical kinetics
Protons
The primary hydrogen kinetic isotope effect in the elimination from 2-phenethyl systems : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science with Honours in Chemistry at Massey University
Thesis
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