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Abstract <p>The reactions of phenol (or <i>ortho</i>-allylphenol) with paraformaldehyde and substituted anilines (or allylamine) yielded 3-allyl-, 3-aryl- or 8-allyl-3-aryl-1,3-benzoxazines. A study of the corrosion inhibitory activity of the synthesized compounds revealed that the degree of protection (<i>Z</i>) in the case of 8-allyl homologues in a 15% HCl solution reaches 96–98%. The absence of an allyl substituent at the C<sup>8</sup> carbon atom of the benzoxazine core leads to a decrease in protection to 75–76%.</p>

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Synthesis of Substituted 1,3-Benzoxazines and Their Anticorrosion Activity

  • 期刊论文

  • 发表日期：

    2025年5月21日

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  • R. R. Safargalin,
  • L. A. Dachaeva,
  • A. A. Mukhamedzyanova,
  • R. R. Gataullin

摘要

Abstract

The reactions of phenol (or ortho-allylphenol) with paraformaldehyde and substituted anilines (or allylamine) yielded 3-allyl-, 3-aryl- or 8-allyl-3-aryl-1,3-benzoxazines. A study of the corrosion inhibitory activity of the synthesized compounds revealed that the degree of protection (Z) in the case of 8-allyl homologues in a 15% HCl solution reaches 96–98%. The absence of an allyl substituent at the C8 carbon atom of the benzoxazine core leads to a decrease in protection to 75–76%.