Base-catalyzed Schmittel cycloisomerization of o-phenylenediyne-linked bis(arenol)s to indeno[1,2-c]chromenes

Masaki Furusawa, Kosuke Arita, Tatsushi Imahori, Kazunobu Igawa, Katsuhiko Tomooka, Ryo Irie

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)


We describe the transition metal-free base-catalyzed Schmittel cycloisomerization reactions of o-phenylene-linked bis(arenol)s to indeno[1,2-c]chromene derivatives through prototropic rearrangement (tautomerization) to a putative vinylidene o-quinone methide intermediate with an enyne-allene system followed by a formal inverse-electron-demand hetero Diels-Alder cycloaddition. The preliminary results on catalytic asymmetric cycloisomerization with chiral bases are also disclosed.

Original languageEnglish
Pages (from-to)7107-7110
Number of pages4
JournalTetrahedron Letters
Issue number52
Publication statusPublished - Dec 25 2013

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Drug Discovery
  • Organic Chemistry


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