Highly efficient heterobimetallic iron-magnesium-HMPA-catalyzed Michael-type Friedel-Crafts reactions of indoles and chalcones
A simple and novel bimetallic catalyst, an iron and magnesium complex (Fe-Mg-hexamethylphosphoramide (HMPA)), with dual activation was found to be an effective and promising catalyst for the Michael-type Friedel-Crafts reactions of indoles with chalcones.