One-pot synthesis of the new dianionic ligand [Na]2[C5H4CO2(CH2)2NTs]; preparation and structures of two rhodium derivatives

The new dianionic ligand [Na]2[C5H4CO2(CH2)2NTs] (1) having an alkoxycarbonyl and an amide group in the same side chain has been prepared by a single step, high yield procedure. The synthesis of the related rhodium complexes [Rh{η5-C5H4CO2(CH2)2N(H)Ts}(NBD)] (3) and [Rh{η5-C5H4CO2(CH2)2N(Me)Ts}(NBD)] (4) is reported as well as their X-ray molecular structures.