Cs2.5H0.5PW12O40-catalyzed conjugate addition of indole to α, β-unsaturated ketones

Abstract

Conjugate addition of indole to a variety of α, β-unsaturated ketones was catalyzed by the cesium salt of tungstophosphoric acid as a heterogeneous catalyst. The reaction was performed in molten tetrabutyl ammonium bromide.

Keywords

• Indole
• Conjugate addition
• α, β-Unsaturated ketones
• Heterogeneous
• Heteropoly acid
• Cesium salt
• Tungstophosphoric