Synthesis, structure and catalytic properties of tripodal amino-acid derivatized pyrazole-based ligands

作者: Nouria Boussalah , Rachid Touzani , Ibrahim Bouabdallah , Sghir El Kadiri , Said Ghalem

DOI: 10.1016/J.MOLCATA.2009.02.031

关键词:

摘要: Abstract A synthesis of five functional multidendate ligand: methyl 2-(bis((3,5-dimethyl-1 H –pyrazol-1-yl)methyl)amino)acetate L1 , -pyrazol-1-yl)methyl)amino)-propanoate L2 2-(bis((3,5-dimethyl-1H-pyrazol-1-yl) methyl) amino)-3-methylbutanoate L3 amino)-3-methyl- pentanoate L4 and 6-(bis((3,5-dimethyl-1 -pyrazol-1-yl)methyl)amino)hexanoate L5 is reported. Copper (II) complexes these compounds were examined for their catalytic properties. The in situ generated copper suitable catalysts the oxidation catechol substrate to quinone with dioxygen at ambient condition. All catalyze reaction rate varying from a high 11.8250 μmol L −1  min L2[Cu(CH 3 CO 2 ) ] complex weaker 0.7875 μmol L L3[Cu(NO .

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