Polar influences in radical reactions. Part VII. Hydrogen abstraction from nuclear-substituted diphenylmethanes, deoxybenzoins, and allylbenzenes by atomic bromine

Low, T.P. and Lee, K.H. (1970) Polar influences in radical reactions. Part VII. Hydrogen abstraction from nuclear-substituted diphenylmethanes, deoxybenzoins, and allylbenzenes by atomic bromine. Journal of the Chemical Society B: Physical Organic. pp. 535-538. ISSN 0045-6470

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Official URL: https://doi.org/10.1039/J29700000535

Abstract

The relative reactivities of nuclear-substituted diphenylmethanes, deoxybenzoins (X·C6H4·CH2Bz), and allylbenzenes towards atomic bromine at 80° have been determined by means of competitive reactions by use of allylbenzene, diphenylmethyl methyl ether, and p-bromoethylbenzene, respectively, as reference standard. The results show p-values of -0.93, -0.92, and -0.68 by the Hammett equation for the three systems, the first two systems being better correlated by σ-constants while in the third system σ+-constants gave better correlation in agreement with a previous report. The probable reasons for the correlation with σ-constants are discussed. The ρ-values for these systems fit in well with the consistent inverse relationship with the reactivity values previously observed.

Item Type: Article
Uncontrolled Keywords: Polar influences; radical reactions; Hydrogen abstraction; nuclear-substituted diphenylmethanes; deoxybenzoins; allylbenzenes by atomic bromine
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Divisions: Faculty of Science > Dept of Chemistry
Depositing User: Mr Jasny Razali
Date Deposited: 09 Mar 2021 04:28
Last Modified: 09 Mar 2021 04:28
URI: http://eprints.um.edu.my/id/eprint/24615

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