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

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 refer...

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Main Authors: Low, T.P., Lee, K.H.
Format: Article
Published: Royal Society of Chemistry 1970
Subjects:
Q Science (General)
QD Chemistry
Online Access:http://eprints.um.edu.my/24615/
https://doi.org/10.1039/J29700000535
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spelling my.um.eprints.246152021-03-09T04:28:51Z http://eprints.um.edu.my/24615/ Polar influences in radical reactions. Part VII. Hydrogen abstraction from nuclear-substituted diphenylmethanes, deoxybenzoins, and allylbenzenes by atomic bromine Low, T.P. Lee, K.H. Q Science (General) QD Chemistry 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. Royal Society of Chemistry 1970 Article PeerReviewed 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 https://doi.org/10.1039/J29700000535 doi:10.1039/J29700000535
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic Q Science (General)
QD Chemistry
spellingShingle Q Science (General)
QD Chemistry
Low, T.P.
Lee, K.H.
Polar influences in radical reactions. Part VII. Hydrogen abstraction from nuclear-substituted diphenylmethanes, deoxybenzoins, and allylbenzenes by atomic bromine
description 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.
format Article
author Low, T.P.
Lee, K.H.
author_facet Low, T.P.
Lee, K.H.
author_sort Low, T.P.
title Polar influences in radical reactions. Part VII. Hydrogen abstraction from nuclear-substituted diphenylmethanes, deoxybenzoins, and allylbenzenes by atomic bromine
title_short Polar influences in radical reactions. Part VII. Hydrogen abstraction from nuclear-substituted diphenylmethanes, deoxybenzoins, and allylbenzenes by atomic bromine
title_full Polar influences in radical reactions. Part VII. Hydrogen abstraction from nuclear-substituted diphenylmethanes, deoxybenzoins, and allylbenzenes by atomic bromine
title_fullStr Polar influences in radical reactions. Part VII. Hydrogen abstraction from nuclear-substituted diphenylmethanes, deoxybenzoins, and allylbenzenes by atomic bromine
title_full_unstemmed Polar influences in radical reactions. Part VII. Hydrogen abstraction from nuclear-substituted diphenylmethanes, deoxybenzoins, and allylbenzenes by atomic bromine
title_sort polar influences in radical reactions. part vii. hydrogen abstraction from nuclear-substituted diphenylmethanes, deoxybenzoins, and allylbenzenes by atomic bromine
publisher Royal Society of Chemistry
publishDate 1970
url http://eprints.um.edu.my/24615/
https://doi.org/10.1039/J29700000535
_version_ 1695531096037392384
score 13.251813

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