Mechanochemical ethoxylation of benzoic acid and its halogene derivatives
https://doi.org/10.34680/2076-8052.2021.4(125).64-67
Abstract
Ethoxylated derivatives of halogen-substituted benzoic acids have been obtained by the method of mechanochemical solid- phase synthesis in a vibrating apparatus. The reaction products have been characterized by IR spectroscopy and acid-base potentiometric titration. It has been shown that, as a result of ethoxylation reactions, changes occur in the IR spectra of the reaction products in comparison with the initial reagents. The absorption bands of vibrations of the carbonyl group of acids during the formation of reaction products are shifted to the high-frequency region. The method of potentiometric titration of solutions of halogen-containing benzoic acids and the products of their interaction with polyethylene glycol has revealed a decrease in the number of carboxyl groups in the ethoxylated sample. According to IR spectroscopy and potentiometric titration data, the interaction of benzoic acids with polyethylene glycol proceeds through the carboxyl group.
About the Authors
S. L. Khil’ko
Институт физико-органической химии и углехими, им. Л.М. Литвиненко
Russian Federation
Russian Federation
O. I. Nevecheryа
Институт физико-органической химии и углехими, им. Л.М. Литвиненко
Russian Federation
Russian Federation
R. A. Makarova
Институт физико-органической химии и углехими, им. Л.М. Литвиненко
Russian Federation
Russian Federation
R. G. Semenova
Институт физико-органической химии и углехими, им. Л.М. Литвиненко
Russian Federation
Russian Federation
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For citations:
Khil’ko S.L., Nevecheryа O.I., Makarova R.A., Semenova R.G. Mechanochemical ethoxylation of benzoic acid and its halogene derivatives. Title in english. 2021;(4(125)):64-67. (In Russ.) https://doi.org/10.34680/2076-8052.2021.4(125).64-67
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