The Wittig Reaction of Benzofuran-2,3-diones

Yasuo Takeuchi, Tominari Choshi, Hideo Tomozane, Hirokazu Yoshida, Masatoshi Yamato

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


The Wittig reaction of benzofuran-2,3-diones (2), cyclic ac-ketoesters was examined. The reaction of 2 having an electron-donating substituent on the aromatic ring with a stable ylide afforded not 3-alkylidene-2(3//)-benzofuranones (4) but 2-alkylidene-3(2//)-benzofuranones (1) with high regioselectivity.

Original languageEnglish
Pages (from-to)2265-2267
Number of pages3
JournalChemical and Pharmaceutical Bulletin
Issue number8
Publication statusPublished - 1990


  • 3-dione Wittig reaction regioselectivity
  • a-ketoester benzofuran-2

ASJC Scopus subject areas

  • Chemistry(all)
  • Drug Discovery


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