Polar substituent effects in the reactions of 1,4 biradicals
β Scribed by Wagner, Peter John; Schott, Herbert N.
- Book ID
- 126789422
- Publisher
- American Chemical Society
- Year
- 1969
- Tongue
- English
- Weight
- 250 KB
- Volume
- 91
- Category
- Article
- ISSN
- 0002-7863
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π SIMILAR VOLUMES
Reoeived in UK 10 July 1973; l coepted for publfoation 3 Augurt 1973) determination of polar substituent constants by pK, measurements of corresponding salts has been recognized for some time 1) 2) 3) . Now that these compounds are more easily accessible 3) measurements can be carried out on a broa
## Abstract The rate constants for 3βsubstituted adamantyl __p__βtoluenesulfonates **3a**β**3k** in ethanol/water 80:20 correlate well with the respective inductive substituent constants Ο. The reaction constant Ο for the toluenesulfonates **3** is 10% larger than for the corresponding bromides **2
Nanosecond transient absorption studies of the lifetimes (5) of several substituted 1 ,n-diphenyl-1 ,n-diyls are reported in polar and non-polar solvents. A para-bromine substituent significantly shortens r. Substitution of OH in the l-position makes the lifetime highly solvent dependent. The substi