Synthesis, physico-chemical and iron (III)-chelating properties of novel hexadentate 3-hydroxy-2 (1H) pyridinone ligands

BL Rai, H Khodr, RC Hider

Index: Rai, Bijaya L.; Khodr, Hicham; Hider, Robert C. Tetrahedron, 1999 , vol. 55, # 4 p. 1129 - 1142

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Citation Number: 35

Abstract

Synthesis of hexadentate ligands via the in situ formation of 1-hydroxy benzotriazolyl active ester in the presence of 2-(1H-benzotriazol-1-yl)-1, 1, 3, 3-tetramethyluronium tetrafluoroborate, TBTU as a coupling agent is described. The pKa values and distribution coefficient values (1-octanol/water) of the ligands and the stability constants of their iron (III) complexes are reported.