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Sterically hindered mono- and bis(2,5-diaryloxazoles) containing biphenyl systems

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Chemistry of Heterocyclic Compounds Aims and scope

Abstract

The condensation of hydrochloric salts of ω-aminomethyl aryl ketones with diphenic anhydride or with the diacid chloride of diphenic acid and subsequent cyclodehydration of the condensation products formed give sterically hindered mono- and bis(2, 5-diaryloxazoles) containing the biphenyl system. The spectroluminescent properties of these compounds were studied. Comparison of the absorption spectra of 2,2′-di(5-phenyloxazolyl-2)biphenyl and 2,5-diphenyloxazole indicates the complete lack of conjugation between the diphenyloxazole fragments, their independent behavior, and their retention of the spatial configuration of 2,5-diphenyloxazole. 2,2′-Di(5-phenyloxazolyl-2)biphenyl has a large Stokes shift. Steric hindrance is also found in 2-carboxy-2′-(5-phenyloxazolyl-2)biphenyl molecules.

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Authors and Affiliations

  1. “Monokristallreaktiv” Scientific-Production Association, 310141, Kharkov

    B. M. Krasovitskii, S. G. Shapiro & É. G. Yushko

Authors
  1. B. M. Krasovitskii
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  2. S. G. Shapiro
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  3. É. G. Yushko
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 184–188, February, 1985.

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Krasovitskii, B.M., Shapiro, S.G. & Yushko, É.G. Sterically hindered mono- and bis(2,5-diaryloxazoles) containing biphenyl systems. Chem Heterocycl Compd 21, 149–153 (1985). https://doi.org/10.1007/BF00504197

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  • DOI: https://doi.org/10.1007/BF00504197

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