Conjugate Addition of Indoles with Electron‐Deficient Olefins Catalyzed by Fe‐Exchanged Montmorillonite K10

Abstract

Conjugate addition of indoles with a variety of electron‐deficient olefins in the presence of Fe‐exchanged montmorillonite K10 affords the corresponding Michael adduct in excellent yields with high selectivity. The catalyst was also found to be recyclable.

Keywords:

• Fe‐exchanged montmorillonite K10
• indole
• Michael addition
• α,β‐unsaturated compounds

Acknowledgments

D. U. S. thanks CSIR, New Delhi, India, for the award of fellowships.