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<p>The selective monochlorination of 2,3,4-trisubstituted pyrroles was performed by a two-step one-pot method. It involves the oxidative chlorination of pyrrole substrates with trichloroisocyanuric acid giving dichlorinated non-aromatic intermediates followed by their reduction with tin(<span>ii</span>) chloride or sodium dithionite to afford the target products in yields of up to 100%.</p>

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Sequential chlorination—reduction as an efficient and selective access to 5-chlorine-substituted pyrroles

  • 期刊论文

  • 发表日期：

    2025年9月1日

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  • A. S. Aldoshin,
  • J. Zhang,
  • V. E. Shambalova,
  • V. G. Nenajdenko

摘要

The selective monochlorination of 2,3,4-trisubstituted pyrroles was performed by a two-step one-pot method. It involves the oxidative chlorination of pyrrole substrates with trichloroisocyanuric acid giving dichlorinated non-aromatic intermediates followed by their reduction with tin(ii) chloride or sodium dithionite to afford the target products in yields of up to 100%.