In this work a Schiff base ester derived ligand [H2L1] were synthesized in three steps, first Synthesis of the pentanoiyl chloride from reaction thionyl with pentanoic acid.
 second step precursosr (W1), 4-[3-(3-hydroxy-1-methyl- butylideneamino)- 4-methyl-phenylimino]-pentan-2-ol ,was prepared by acetylaceton tolylen2,4-diamin . theird ligands precursor (W1)with to produce[H2L1] 1:2 mole ...

To isolate the caffeine from Lipton™ Black Tea Brand, a sequence of practices was applied. An Acid-Base Liquid-Liquid Extraction approach carried out to force be isolated in upper organic layer as extractant. By this method, first tea bags through passing different steps extraction, then with use both Solid-Liquid well liquid-liquid extraction approach. A product 0.05 g pure obtained giving per...