A fast, efficient and eco-friendly procedure to prepare isatin ketals
A fast and efficient solvent-free procedure to prepare isatin ketals has been developed. Three different clays, commercial Montmorillonite K10 (Aldrich Co.) and two natural clays, were used as catalysts. A Brazilian-manufactured microwave oven was used as heat source. Montmorillonite K10 provides the best results.
Journal: Catalysis Communications - Volume 8, Issue 12, December 2007, Pages 2130–2136