Publication Type Journal Article
Title Catalytic conversion of 2,4,5-trisubstituted imidazole and 5-substituted 1H-tetrazole derivatives using a new series of half-sandwich (eta(6)-p-cymene) Ruthenium(II) complexes with thiophene-2-carboxylic acid hydrazone ligands
Authors Govindasamy Vinoth Sekar Indira Madheswaran Bharathi Govindhasamy Archana Luis G. Alves Ana M. Martins Kuppannan Shanmuga Bharathi
Groups IOARC
Journal INORGANICA CHIMICA ACTA
Year 2021
Month February
Volume 516
Number
Pages
Abstract A new series of half-sandwich (eta(6) -p-cymene) ruthenium(II) complexes with thiophene-2-carboxylic acid hydrazide derivatives [Ru(eta(6) -p-cymene)(Cl)(L)] [L = N -(naphthalen-1-ylmethylene)thiophene-2-carbohydrazide (L-1), N -(anthracen-9-ylmethylene)thiophene-2-carbohydrazide (L-2 ) and N -(pyren-1-ylmethylene)thiophene-2-carbohydrazide (L-3)] were synthesized. The ligand precursors and their Ru(II) complexes (1-3) were structurally characterized by spectral (IR, NMR and mass spectrometry) and elemental analysis. The molecular structures of the ruthenium(II) complexes 1-3 were determined by single-crystal X-ray diffraction. All complexes were used as catalysts for the one-pot three-component syntheses of 2,4,5-trisubstitued imidazole and 5-substituted 1H-tetrazole derivatives. The catalytic studies optimized parameters as solvent, temperature and catalyst. The catalysts revealed very active for a broad range of aromatic aldehydes presenting either electron attractor or electron donor substituents and, although less active, moderate to high activities were observed for alkyl aldehydes.
DOI http://dx.doi.org/10.1016/j.ica.2020.120089
ISBN
Publisher
Book Title
ISSN 0020-1693
EISSN 1873-3255
Conference Name
Bibtex ID ISI:000605619000007
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