In conclusion, the dinuclear bis(phosphoimino)binaphthoxy-Pd2(OAc)2 complex described herein facilitated a double Mannich reaction of N-Boc-imine with malononitrile to give chiral 1,3-diamines in a highly enantioselective manner. This demonstrates that over-reaction need not always be useless and undesired: well managed over-reaction can open up novel synthetic processes.