A facile synthesis of aminomethylene bisphosphonates catalyzed by ytterbium perfluorooctanoate under ionic liquid condition

► Aminomethylene bisphosphonates are synthesized from one-pot reactions. ► The reactions are promoted efficiently by ytterbium perfluorooctanoate. ► The reactions are undergoing in ionic liquid conditions. ► The catalyst can be recycled and reused. ► The methodology tolerates most of substrates.