Regioselectivity of the methanolysis of polychlorinated biphenyls
- Authors: Khaibulova T.S.1, Boyarskaya I.A.1, Polukeev V.A.2, Boyarskii V.P.1
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Affiliations:
- St. Petersburg State University
- Institute of Experimental Medicine
- Issue: Vol 86, No 10 (2016)
- Pages: 2318-2324
- Section: Article
- URL: https://journals.rcsi.science/1070-3632/article/view/216338
- DOI: https://doi.org/10.1134/S1070363216100121
- ID: 216338
Cite item
Abstract
Regioselectivity of the methanolysis of lower polychlorinated biphenyls with sodium methoxide in a mixture of methanol and DMSO at 100–130°С was studied. It was found that 2,4,4'-tricholobiphenyl is much more reactive than 2,4-dichlorobiphenyl. This results in different mechanisms of substitution. 2,4-Dichlorobiphenyl reacts with sodium methoxide by the elimination–addition mechanism to form four monosubstitution products in comparable quantities. 2,4,4'-Trichlorobiphenyl reacts with the methodixe ion by the classical SNAr mechanism, with preferential substitution of the 2-chlorine atom.
About the authors
T. Sh. Khaibulova
St. Petersburg State University
Email: v.boiarskii@spbu.ru
Russian Federation, Universitetskaya nab. 7–9, St. Petersburg, 199034
I. A. Boyarskaya
St. Petersburg State University
Email: v.boiarskii@spbu.ru
Russian Federation, Universitetskaya nab. 7–9, St. Petersburg, 199034
V. A. Polukeev
Institute of Experimental Medicine
Email: v.boiarskii@spbu.ru
Russian Federation, St. Petersburg
V. P. Boyarskii
St. Petersburg State University
Author for correspondence.
Email: v.boiarskii@spbu.ru
Russian Federation, Universitetskaya nab. 7–9, St. Petersburg, 199034