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  • Chem Sci Trans., 2017, 6(3),  pp 393-398  

    DOI:10.7598/cst2017.1205

    Research Article

    A Powerful Organocatalytic Methodology for the Synthesis of Spiro-Epoxyoxindoles from Ylideneoxindoles Using tert-Butyl Hydroperoxide

  • MUKESH KUMAR TYAGI* and SANTOSH KUMAR SRIVASTAVA
  • Department of Chemistry, Dr. H. S. Gour University (A Central University) Sagar-470003(M.P.), India
  • Abstract

    Noncovalent organocatalysed epoxidation of ylideneoxindoles is experimentally, theortically and technologically importance. Stereoselective epoxidation for ylideneoxindole cyclohexane-1,3-diones have been successfully designed. Spiro compounds have been formed with two adjacent new stereocentres. The transition state created by H-bonding between bifunctional catalyst and substrate. This procedure is permit to synthesize wide variety of functional groups and gives excellent yields. Furthermore, the bifunctional catalyst could be reused and recovered.

    Keywords

    Ylideneoxindoles, Bifunctional organocatalyst, TBHP, DFT

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