Diastereoselective and Atom Economic One-pot Synyhesis of Phospholane Derivtives

The synthesis of phospholane derivatives is of considerable current interest principally because these compounds can be used as ligands for applications in homogeneous catalysis. Recently, we reported a very efficient and atom economic new method for the one-pot preparation of phospholane and its derivatives at room temperature. With our method we have synthesized alkyl-, aryl-, and alkenyl phospholane sulfides in good yield. We used benzothiadiphosphole as phosphorus atom donor, which, at the end of the reaction, can be easily regenerated, by simple addition of PCl3 to its residue. Now we are studying the possibility to obtain asymmetrical phospholanes. Preliminary results show that the reaction occurs with good yield and with satisfactory stereoselectivity degree.