A highly efficient In(OTf)3-catalyzed [3 + 3] annulation of spirocyclopropyl oxindoles with 1,4-di-thiane-2,5-diol

Yongjia Hao, Yi Gong, Zhongyan Cao, Ying Zhou*, Jian Zhou

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Spirooxindoles play an important role in drug discovery and development. The development of efficient methods for the synthesis of spirooxindoles from easily available starting materials is of current interest. Herein, we report in detail the In(OTf)3-catalyzed [3 + 3] annulation of spirocyclopropyl oxindoles and 1,4-di-thiane-2,5-diol, which allows the facile preparation of spiro[indoline-3,4′-thiopyran]-2-ones bearing (tetrahydro)thiopyran skeleton.

Original languageEnglish
Pages (from-to)681-684
Number of pages4
JournalChinese Chemical Letters
Volume31
Issue number3
DOIs
StatePublished - Mar 2020

Keywords

  • Cyclopropane
  • Lewis acid catalysis
  • Spirooxindoles
  • Sulfur heterocycles
  • [3 + 3] cycloaddition

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