June 2010
Design, synthesis and bioassay of novel coumarins
In Iraq like most third world countries, attempts to discover new antibiotic drugs derived from coumarins moreover develop the branch of applied in organic chemistry. Novel coumarin derivatives were synthesized in a good yield through converting lacton to lactam and study the biological activity of the synthesized compounds. Coumarins were characterized by elemental analysis, FT-IR, 1H-NMR and UV/visible spectra....
June 2010
Surface modification with copper by electroless deposition technique: An overview
Surface behaviour is very important for which substrate surface preparation is emphasized in electroless deposition process. It directly or indirectly affects surface behaviour as well as the kinetics of electroless deposition process. So far as mechanism is concerned, it proceeds in an electrochemical pathway. The electrochemical approach provides clarity of the mechanism by studying independently the partial anodic...
June 2010
Applicability of an ionic liquid in the removal of chromium from tannery effluents: A green chemical approach
The task specific ionic liquid tricaprylmethyl ammonium thiosalicylate proved to be an excellent extraction agent for chromium from aqueous solution. Chromium was removed from tannery effluents to a greater extent than the conventional methods; using the water insoluble, thiol containing task specific ionic liquid. Key words: Task- specific...
June 2010
Palladium (II)-triphenylphosphine-arylazoimidazole complexes: Synthesis and spectroscopic characterization
Reaction of [Pd(PPh3)2Cl2/Br2] with AgOTf in dichloromethane followed by addition of ligand leads to [Pd(PPh3)2(OSO2CF3)2] and then [Pd(PPh3)2(RaaiR)](OSO2CF3)2 [RaaiR/ = p-R-C6H4-N=N-C3H2-NN-1-R/, (1-3), abbreviated as N,N/-chelator, where N(imidazole) and N(azo) represent N and N/, respectively; R = H (a), Me (b), Cl (c) and R/ = Me (1), CH2CH3 (2), CH2Ph (3), OSO2CF3 is the triflate anion]. 31P...
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