Essais de Chloration Dirigée: XIII. La Photochloration Directe des Hydrocarbures Arylaliphatiques [1]
- 1 January 1970
- journal article
- research article
- Published by Wiley in Bulletin des Sociétés Chimiques Belges
- Vol. 79 (3-4) , 203-210
- https://doi.org/10.1002/bscb.19700790304
Abstract
Photochlorination in liquid phase was performed at various temperatures (from 22 to 98°C) in order to determine the ratio of the various monochlorinated isomers generated during the reaction. The different compounds studied are of general formula C6H5R, where R is equal to: C2H5, n.C3H7, i.C3H7, n.C4H9, sec. C4H9, n.C5H11.Substitution only takes place in the side chain and preferentially in the α position: for instance, ethylbenzene gave 90% of the α and 10% of the β‐chloroethylbenzene. Differences between activation energy of the two chlorinations of the same hydrocarbon are relatively high. In the case of C2H5C6H5 the value (Eα ‐ Eβ) amounts 3.130 cal. m−1.Keywords
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