SnCl2/montmorillonite KSF is an highly efficient heterogenous reusable catalyst for the selective alkylation of indoles with α, β unsaturated carbonyl compounds under solvent free conditions

Authors

• Krishna Reddy Jekkidi Inorganic and physical chemistry division, Indian Institute of Chemical Technology, Habsiguda, Hyderabad 500007, India.
• Suryakiran Navath

Abstract

SnCl2/ Montmorillonite KSF, a composite heterogeneous catalyst found to be recyclable and efficient for the selective alkylation of indole at 3-position with α, β unsaturated carbonyl compounds at room temperature under solvent free conditions. The montmorillonite catalyst was prepared and characterized using XRD. Obtained 3-substituted indoles products were purified with column chromatography and crystallization and all products were characterized by 1H NMR and mass spectral data