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<p>Cycloaddition reaction of 1-alkyl-1,2-diphospholes with alkynes is regarded as a new way for the synthesis of pentasubstituted phosphinines. The [4 + 2] cycloaddition of 1-ethyl-3,4,5-triaryl-1,2-diphosphacyclopenta-2,4-diene to bis(2-thienyl)acetylene gives new 2,3-(2-thienyl)-4,5,6-triaryl-1-phosphinines along with formation of ethylphosphinidene [:P–Alk].</p> Graphical Abstract <p></p>

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Synthesis of pentasubstituted phosphinines from [4 + 2] cycloaddition reaction of 1-alkyl-1,2-diphospholes with bis(2-thienyl)acetylene

  • 期刊论文

  • 发表日期：

    2026年8月3日

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  • Almaz A. Zagidullin,
  • Stanislav V. Borisevich,
  • Nina I. Shatalova,
  • Vasily A. Miluykov

摘要

Cycloaddition reaction of 1-alkyl-1,2-diphospholes with alkynes is regarded as a new way for the synthesis of pentasubstituted phosphinines. The [4 + 2] cycloaddition of 1-ethyl-3,4,5-triaryl-1,2-diphosphacyclopenta-2,4-diene to bis(2-thienyl)acetylene gives new 2,3-(2-thienyl)-4,5,6-triaryl-1-phosphinines along with formation of ethylphosphinidene [:P–Alk].

Graphical Abstract