Faculty Publications

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Author: search.filters.author.Ramakrishna, D.Subject: search.filters.subject.Schiff base

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    Effective oxidation of alcohols with H5IO6 catalyzed by nickel(II) schiff base complexes
    (2010) Ramakrishna, D.; Badekai Ramachandra, B.
    Nickel(II)-Schiff base-triphenylphosphine complexes catalyze oxidation of alcohols to carbonyls in presence of minimum amount of periodic acid. The catalytic oxidation was developed in mild conditions and showed good yields. The effects of temperature, time, and concentrations of catalyst and co-oxidant were studied. Higher catalytic activity has been observed for NiL1 compared to the other complexes.Copyright © Taylor & Francis Group, LLC.
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    Synthesis, characterization, and biological activity of metal complexes of 4-ethyl vanillideneamino-3-methyl-5-mercapto-1,2,4-triazole
    (2010) Ramasubramanian, A.S.; Badekai Ramachandra, B.; Ramakrishna, D.
    A series of transition metal-triazole derivatives have been synthesized and characterized by microanalytical, thermal, magneto-chemical, and spectral studies. The synthesized complexes were screened for biological activities. The complexes of Co(II) and Ni(II) emerged as a good antibacterial agent against Gram-negative bacteria such as Escherichia coli, Pseudomonas aeruginosa, Salmonella typhi, Bacillus subtilis, and Shigella flexneri. © 2010 Taylor & Francis.
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    A catalytic process for the selective oxidation of alcohols by copper (II) complexes
    (2011) Ramakrishna, D.; Badekai Ramachandra, B.
    Novel copper (II)-N-(2-pyridyl)-N'-(5-R-salicylidene) hydrazine triphenylphosphine complexes have been synthesized and characterized. The complexes were effective in the catalytic oxidation of primary and secondary alcohols in presence of periodic acid (H5IO6) as oxidant. The oxidation reactions were carried out in acetonitrile. Electrochemical electron transfer study reveals CuII-CuI reduction in methanolic solutions. A mechanistic study of the above reactions has been proposed. © 2011 Elsevier B.V. All rights reserved.