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In this work we focused on the synthesis of two new macrocyclic Schiff bases: (III) , (IV), (VI) containing nitrogen -oxygen donor atoms were synthesized by condensation of intermediate compounds: 1,6-bis (2-formylphenel) hexane (I)and α,α’-bis(2-carboxyaldehyde phenoxy) xylene(II) with 4,4′-Diamino-diphenylmethane and 4-Aminophenyl sulfone. Also new open Schiff bases (V) which were prepared by condensation of benzylhydrazidewith 1,6-bis (2-formylphenel) hexane (I). Identification of these macrocyclic Schiff bases: 1,16-di aza-3,4,13,14-tri phenyl-17,25 -di phenyl methane-5,12-di oxacyclo penta-icozane-1,15-diene(III), 1,16-di aza-3,4,7,10,13,14-tri phenyl-17,25 -di phenyl methan-5,8di oxacyclo penta-icozane-1,15-diene. (IV).1,16-di aza-3,4,13,14-tri phenyl-17,25 -di phenyl sulphide-5,12di oxacyclo penta-icozane-1,15-diene(V),and N’,N’-(2,2′-(hexane-1,6-bis(oxy)) bis(2,1-phenylene))bis (methanylidene) dibenzhydrazide. (VI).The Schiff bases were checked by different spectral technique (LC-MS, 1 H-NMR, IR, elemental analyses). The new Schiff Bases were studied for antibacterial activities against (Bacillus subtilis and Staphylococcus aureus) are Gram positive and (Salmonella typhi and Escherichia coli) are Gram negative. The ligands were exhibited a variable activity of inhibition on the growth of the bacteria.
Hamid Hussein Eissa. 2014. \u201cSynthesis Characterization and Antibacterial Activity of New Open and Macrocyclic Schiff Bases Ligands\u201d. Global Journal of Science Frontier Research - B: Chemistry GJSFR-B Volume 14 (GJSFR Volume 14 Issue B3): .
Crossref Journal DOI 10.17406/GJSFR
Print ISSN 0975-5896
e-ISSN 2249-4626
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Total Score: 101
Country: Yemen
Subject: Global Journal of Science Frontier Research - B: Chemistry
Authors: Hamid Hussein Eissa (PhD/Dr. count: 0)
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Publish Date: 2014 06, Sat
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In this work we focused on the synthesis of two new macrocyclic Schiff bases: (III) , (IV), (VI) containing nitrogen -oxygen donor atoms were synthesized by condensation of intermediate compounds: 1,6-bis (2-formylphenel) hexane (I)and α,α’-bis(2-carboxyaldehyde phenoxy) xylene(II) with 4,4′-Diamino-diphenylmethane and 4-Aminophenyl sulfone. Also new open Schiff bases (V) which were prepared by condensation of benzylhydrazidewith 1,6-bis (2-formylphenel) hexane (I). Identification of these macrocyclic Schiff bases: 1,16-di aza-3,4,13,14-tri phenyl-17,25 -di phenyl methane-5,12-di oxacyclo penta-icozane-1,15-diene(III), 1,16-di aza-3,4,7,10,13,14-tri phenyl-17,25 -di phenyl methan-5,8di oxacyclo penta-icozane-1,15-diene. (IV).1,16-di aza-3,4,13,14-tri phenyl-17,25 -di phenyl sulphide-5,12di oxacyclo penta-icozane-1,15-diene(V),and N’,N’-(2,2′-(hexane-1,6-bis(oxy)) bis(2,1-phenylene))bis (methanylidene) dibenzhydrazide. (VI).The Schiff bases were checked by different spectral technique (LC-MS, 1 H-NMR, IR, elemental analyses). The new Schiff Bases were studied for antibacterial activities against (Bacillus subtilis and Staphylococcus aureus) are Gram positive and (Salmonella typhi and Escherichia coli) are Gram negative. The ligands were exhibited a variable activity of inhibition on the growth of the bacteria.
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