Synthesis of a new dicompartment multifunctional groups ligand

Phenol-based acyclic ligand 1,6-bis(2-chlorobenzyl)-2,5-bis(2-hydroxy-3-formyl-5-methylbenzyl)2,5-diazahexane, LH2 and its dilithium form Li2L possessing two dissimilar compartments having multifunctional groups were prepared through a Mannich reaction. To synthesize this ligand first, diamine compound 1,6-bis(2-chlorobenzyl)-2,5-diazahexane was prepared and then in a one-step procedure an equivalent of diamine and two equivalents of 4-methyl-2-formylphenol in the presence of an excess amount paraformaldehyde were reacted. All characterization data for the new compounds including diimine, diamine, LH2 and Li2L are reported.