Electrophilic additions to alkenes. Part VI. Substituent effects on the rates of reaction of arylsulphenyl bromides with cyclohexene
- 1 January 1969
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society B: Physical Organic
- p. 1054-1056
- https://doi.org/10.1039/j29690001054
Abstract
The rates of addition of a series of 4-substituted 2-nitrobenzenesulphenyl bromides to cyclohexene have been measured in acetic acid solution at 25·0°. A value of –0·667 is obtained for the reaction constant, ρ+. The rates of addition of these sulphenyl bromides relative to those of the corresponding chlorides are essentially constant, the average value for kBr:kCl being 2·4. The constancy of this ratio indicates that the first step in the suggested mechanism is rate-limiting.Keywords
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