SYNTHESIS OF POLYDENTATE LIGANDS CONTAINING AMIDES AND THIOLS FOR BIOMIMETIC METAL COMPLEXES

Three pentadentate “N2S3” and one tetradentate “N2S2” new ligands with “N” = CONH and “S” = SH have been synthesized. The key step is the direct diamide formation from the malonyl diester and the amines in the presence of trimethylaluminum.