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http://hdl.handle.net/11375/25288
Title: | Kinetic Isotope Effects in Aromatic Bromination Reactions |
Authors: | Baliga, Bantwal |
Advisor: | Bourns, A. N. |
Keywords: | kinetic isotope effect;aromatic bromination |
Publication Date: | Nov-1961 |
Abstract: | Both bromodeprotonation and bromodesulphonation occur during aqueous bromination of sodium p-methoxybenzenesulphonate, A, and potassium l-methylnaphthalene-4-sulphonate, B. Extensive kinetic studies reported here suggest that bromodesulphonation of A proceeds by a two-step process with Br2 as the brominating species, but do not completely exclude Br+ (or H2OBr+) acting in either a one- or two-step process. For B, the kinetic data can be interpreted by either a one- or two-step process with Br2 as the brominating species. Kinetic sulphur isotope effects have been measured for the bromodesulphonation of A and B and found to vary with bromide-ion concentration, thus strongly supporting the two-step process involving molecular bromine. The kinetic results for the bromodeprotonation of A cannot distinguish between a one- and two-step process involving Br2l the two-step mechanism has been confirmed by the observation of a variation in kinetic hydrogen isotope effect with bromide-ion concentration. |
URI: | http://hdl.handle.net/11375/25288 |
Appears in Collections: | Digitized Open Access Dissertations and Theses |
Files in This Item:
File | Description | Size | Format | |
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Baliga_Bantwal_T_1961Nov_PhD.pdf | 9.77 MB | Adobe PDF | View/Open |
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