Catalytic asymmetric 1,3-dipolar cycloaddition of N-unprotected 2-oxoindolin-3-ylidene derivatives and azomethine ylides for the construction of spirooxindole-pyrrolidines

Org Biomol Chem. 2011 Mar 21;9(6):1980-6. doi: 10.1039/c0ob00943a. Epub 2011 Jan 26.

Abstract

Asymmetric 1,3-dipolar cycloaddition of N-unprotected 2-oxoindolin-3-ylidene with azomethine ylides for the construction of spirooxindole-pyrrolidines bearing four contiguous stereogenic centers has been achieved with AgOAc/TF-BiphamPhos complexes for the first time. This catalytic system performance well over a broad scope of substrates, providing the synthetically useful adducts in high yields and excellent diastereoselectivities and moderate enantioselectivities.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Azo Compounds / chemistry*
  • Catalysis
  • Crystallography, X-Ray
  • Cyclization
  • Indoles / chemistry*
  • Models, Molecular
  • Molecular Structure
  • Pyrrolidines / chemistry*
  • Spiro Compounds / chemistry*
  • Stereoisomerism
  • Thiosemicarbazones / chemistry*

Substances

  • Azo Compounds
  • Indoles
  • Pyrrolidines
  • Spiro Compounds
  • Thiosemicarbazones
  • azomethine