Generation of a geminal dicarbenoid of chromium: Formation of allenes from terminal alkenes in one-pot

Kazuhiko Takai, Ryo Kokumai, Shota Toshikawa

Research output: Contribution to journalArticle

6 Citations (Scopus)


Treatment of CCl4 with 4 equiv of CrCl2 in THF generates a geminal dicarbenoid of chromium by reduction of two of the chlorine atoms of CCl4, and the dicarbenoid species selectively reacts with terminal olefins to give cyclopropylidene carbenoids, which readily decompose to allenes.

Original languageEnglish
Pages (from-to)1164-1166
Number of pages3
Issue number7
Publication statusPublished - 2002



  • Allenes
  • Carbenoids
  • Chromium(II)
  • Cyclopropanes

ASJC Scopus subject areas

  • Organic Chemistry

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