resumo
The reaction of the multidentate ligand N-(2-(aryldiazenyl)phenyl)picolinamide, HL (3a, 3b and 3c) [HL is ArN = NC6H4NHC(O)Py, where Ar is C6H5 for HL1 (3a), p-MeC6H4 for HL2 (3b) or p-ClC6H4 for HL3 (3c), and Py stands for pyridyl], with Cu(CH3COO)(2)center dot H2O and Na2PdCl4 separately afforded the complexes [(L)(2)Cu] (4a, 4b and 4c) and [(L)PdCl] (5a, 5b and 5c) respectively, where the deprotonated ligand L- binds copper(II) and palladium(II) in a tridentate (N,N,N) fashion. X-ray structures of [(L-3)(2)Cu] (4c) and [(L-1)PdCl] (5a) were determined to confirm the molecular structures. The newly synthesized complex 4a exhibits catalytic activity toward the oxidation of alcohols to the corresponding carbonyl compounds and oxidation of organic thioethers to sulfoxide and sulfone, whereas the complex 5a is an active catalyst for Suzuki and Heck reactions. (C) 2014 Elsevier Ltd. All rights reserved.
palavras-chave
CROSS-COUPLING REACTIONS; LIQUID-PHASE OXIDATION; TERMINAL ALKYNES; ARYL BROMIDES; DIAZOKETIMINATO COMPLEXES; SONOGASHIRA REACTION; CATALYZED OXIDATION; BENZYLIC ALCOHOLS; HYDROGEN-PEROXIDE; AEROBIC OXIDATION
categoria
Chemistry; Crystallography
autores
Pattanayak, P; Pratihar, JL; Patra, D; Brandao, P; Felix, V; Chattopadhyay, S
nossos autores
Paula Cristina Ferreira da Silva Brandão
Investigador Auxiliar
Vítor Félix
Professor Associado com Agregaçãoagradecimentos
Poulami Pattanayak is thankful to the DST (New Delhi, India) for funding under the DST-WOS-A scheme (No. SR/WOS-A/CS-140/2011). The necessary laboratory and infrastructural facilities were provided by the Department of Chemistry, University of Kalyani. The support of DST under the FIST and PURSE program to the Department of Chemistry, University of Kalyani is acknowledged.