A hydrophobic heterogeneous acid catalyst for the the one-pot multi-component synthesis of hexahydroquinolines

A hydrophobic heterogeneous acid catalyst is easily synthesized and characterized by different methods. It was used as a magnetically recyclable heterogeneous catalyst for the efficient one-pot multi-component synthesis of hexahydroquinolines. The present catalytic system worked extremely well even up to five subsequent trails without significant loss of its catalytic activity. The strong magnetic properties of the reused catalyst were revealed by complete and easy attraction using an external magnet.