Synthesis of N,N'-bis and N,N,N',N'-tetra-[3,5-disubstituted-1-pyrazolyl)methyl]para-phenylenediamines: New Candidate Ligands for Metal Complex Wires.

M. Daoudi (1) , N. Ben Larbi (1) , A. Kerbal (1) , Bruno Bennani (2) , Jean-Pierre Launay (3) , Jacques Bonvoisin (3) , T. Ben Hadda (4) , Pierre H. Dixneuf (5)

1 Laboratoire de Chimie Organique
2 Ecole Normale Supérieure - Département de Chimie
3 CEMES - Centre d'élaboration de matériaux et d'études structurales
4 Laboratoire d'Activation Moléculaire, Faculté des Sciences
5 ISCR - Institut des Sciences Chimiques de Rennes

A series of tridentate ligands N,N-bis-[(di-substituted-1-pyrazolyl)methyl]arylamines 2–3a,b and benzylamine 4a,b, tetradentate N,N′-bis-[(di-substituted-1-pyrazolyl)methyl]para-phenylenediamines 7a,b and hexadentate N,N,N′,N′-tetra-[(di-substituted-1-pyrazolyl)methyl]para-phenylenediamines 8a,b has been prepared in good yield by condensation of arylamines, benzylamine or para-phenylenediamine with N-hydroxymethyl disubstituted pyrazoles 1a,b. The synthesis and characterisation of these various polydentate ligands are described.

Mots clés: polydentates N-Ligands; Pyrazoles

Domaines: Catalyse; Chimie organique

M. Daoudi, N. Ben Larbi, A. Kerbal, Bruno Bennani, Jean-Pierre Launay, et al.. Synthesis of N,N'-bis and N,N,N',N'-tetra-[3,5-disubstituted-1-pyrazolyl)methyl]para-phenylenediamines: New Candidate Ligands for Metal Complex Wires.. Tetrahedron, 2006, 62, pp.3123-3127. ⟨10.1016/j.tet.2006.01.034⟩. ⟨hal-00322278⟩