Synthesis of N, N′-bis and N, N, N′, N′-tetra-[(3,5-di-substituted-1-pyrazolyl)methyl] para-phenylenediamines: new candidate ligands for metal complex wires

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-phenylenediami...

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Bibliographic Details
Published in:Tetrahedron 2006-03, Vol.62 (13), p.3123-3127
Main Authors: Daoudi, Maria, Larbi, Najib Ben, Kerbal, Abdelali, Bennani, Brahim, Launay, Jean-Pierre, Bonvoisin, Jacques, Hadda, Taibi Ben, Dixneuf, Pierre H.
Format: Article
Language:English
Subjects:
Catalysis
Chemical Sciences
Organic chemistry
p-Phenylenediamine
Polydentate N-ligands
Pyrazol-1-ylmethanol
Pyrazoles
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Summary: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. Graphical Abstract
ISSN:0040-4020
1464-5416
DOI:10.1016/j.tet.2006.01.034