Non-template synthesis of ‘N4’ di- and tetra-amide macrocylic ligands with variable ring sizes

Synthesis of Novel Schiff's Bases Containing Pyridine Rings

“…[9] We have carried out ring closure reactions on diamine compounds 5, 6, and 7 to obtain N 4 -tetraazamacrocycles. [5] Scheme 1.…”

“…Further, we have recently reported the non-template synthesis of di-and tetra-amide macrocyclic ligands using the diamine diamide compounds. [5] We have also investigated the catalytic applications of the 4f-metal complexes of these ligands in organic synthesis. [6 -8] The structures of the complexes were reported as shown in Fig.…”

Synthesis and Spectral Investigations of Manganese(II), Cobalt(II), Nickel(II), Copper(II) and Zinc(II) Complexes of New Polydentate Ligands Containing a 1,8-Naphthyridine Moiety

“…As part of our research, we have developed a number of polydentate ligands containing amide groups [6][7][8][9][10][11]. 1,8-Naphthyridines constitute a group of very important biodynamic agents whose coordination chemistry is investigated very little [12][13][14].…”

Antifungal and Spectral Studies of Cr(III) and Mn(II) Complexes Derived from 3,3′-Thiodipropionic Acid Derivative

“…On coordination, this band shows a negative shift, which is in further support of coordination of the NH group through nitrogen. However, the amide I band does not show any considerable change in its position on complexation, which suggests that the C=O group does not participate in coordination [7,9,10]. The IR spectra of complexes also give the new bands at 407-497 and 312-328 cm −1 due to ν(M-N) and ν(M-S) stretching vibrations [7,11].…”