SULFONATION OF 4'-ACETYL-, 4'-(<i>tert</i>-BUTYL)DIBENZO-18-CROWN-6 AND (DIBENZO-18-CROWN-6)-4'-SULFONIC ACID WITH POTASSIUM SULFATE IN POLYPHOSPHORIC ACID

Authors

  • А. Д. Гребенюк M. Ulugbek National University of Uzbekistan, Tashkent 700174
  • А. К. Ташмухамедова M. Ulugbek National University of Uzbekistan, Tashkent 700174

DOI:

https://doi.org/10.1007/6771

Keywords:

4'-acetyl-, 4'-(tert-butyl)dibenzo-18-crown-6, 4'-acetyl-4"(5")-dibenzo-18-crown-6-sulfonic acid, 4'-(tert-butyl)-4"(5")-dibenzo-18-crown-6-sulfonic acid, (dibenzo-18-crown-6)-4', 4"(5")-disulfonic acid, (dibenzo-18-crown-6)-4'-sulfonic acid, PPA (polyphosphoric acid), potassium sulfate, sulfonation

Abstract

The sulfonation of monosubstituted derivatives of dibenzo-18-crown-6 with potassium sulfate in polyphosphoric acid has been carried out. Sulfonic acids with various functional groups in the second nucleus of dibenzo-18-crown-6 have been obtained. A qualitative comparison of the reactivity of the substrates gave information on the transfer of the electronic influence of a substituent through the macrocycles. The displacement of electron density  in the benzene nuclei of the substrates and the products of sulfonation was assessed from the value  of the displacement of the proton signals in the <sup>1</sup>H NMR spectra.

How to Cite
Grebenyuk, A. D.; Tashmukhamedova, A. K. Chem. Heterocycl. Compd. 2009, 45, 297. [Khim. Geterotsikl. Soedin. 2009, 370.]

For this article in the English edition see DOI 10.1007/s10593-009-0273-z

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Published

2022-04-26

Issue

No. 3 (2009)

Section

Original Papers