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Register a new userSynthesis of Novel Macrocyclic From Schiff Bases Based on acetylacetone and terephtaldialdehide
تحضير مركبات حلقية ضخمة جديدة من أسس شيف أساسها أسيتيل اسيتون و تير فتال ثنائي ألدهيد
1993
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صنعت الحلقات الضخمة لهيدرازونات أسس شيف بتفاعل سوكسنيل ثنائي هيدرازيـد مـع اسـيتيل اسيتون و أديبيك ثنائي هيدرازيد مع الاسيتيل أسيتيون و تيرفتال ثنائي ألدهيد و سوبريك ثنائي هيدرازيد مع تير فتال ثنائي ألدهيد.
macrocyclic hydrazone Schiff base was synthesized by reaction of succinicdihydrazide, Adipicdihydrazide with acetylacetone, adipicdihydrazide with terephtaldialdehide and sebacicdihydrazide with terephtaldialdehide.
References used
Avaji, P. G. Vinod Kumar, C. H. and Shivananda, K. N., 2009. Synthesis, spectral characterization, in-vitro microbiological evaluation and cytotoxic activities of novel macrocyclic bis hydrazone C. Eur. J. Med. Chem, V.xxx, pp.1-8
Popov, L. D. Tupolova, Yu. P. and Lukov, V. V., 2008. Transition metal complexes based on 2, 4-dihydroxyisophthalic anhydride and its functionalized derivative Russian J, V.78, pp. 2094- 2099
Pavan, F. P. Maia, P. S. Leite, S. R. A. and Deflon, V. M., 2010. Thiosemicarbazones, semicarbazones, dithiocarbazates and hydrazide/hydrazones: Anti – Mycobacterium tuberculosis activity and cytotoxicity. A. A. Eur J Med Chem, V. 45, pp. 1898-1905
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Imines based on different and secondary amines were synthesized by
reaction of acetylacetone with 2-amino-5-nitro phenol, adamantine amine, 1.7-
diamino heptane and o-aminophenol. 2.4-bis (2-hydroxy-4-nitro-1-imino
phenyl) pentane, 2.4-bis (2-imin
o admantyl) pentane, 2.4-bis(2hydrox y-1-
iminophenyl) pentane and 1.5.13.18-tetraaza- 2.4.14.16- tetramethylcyclotetracosan-
1.4.13.16-tetraene have been characterized by EA, IR, 1HNMR
and 13C-NMR.
This work was focused on the synthesis of tetradentate Schiff bases which
were prepared by condensation of salicylaldehyde with 1,4-diaminobenzene
and 1,3-diaminobenzene. The Schiff base ligands were checked by different
spectral technique (GC-MS,
1H-NMR, IR). The influences of shaking time on
the extraction of Cu (II) using solvent extraction technique was studied. Then
the Kinitic parameters were calculated from schemes which give best line
through drawing log (a-x) vs time or 1/(a-x) vs time or [Cu2+] vs time, whereas
(a-x) represents Cu(II) concentration in water phase and from it (n) reaction
order, (K) reaction rate constant (t1/2) reaction half between prepared ligand
and Cu (II) were calculated.
Separation with solvent extraction of Cu(II), Hg(II), and Cr(III) from
aqueous solution using the ligend (HL) as a new extractant has been studied.
The new acyclic Schiff Base (HL) was synthesized by reaction of 5-bromosalicylaldehyde
with 2-(2-Am
inoethyl)pyridine. The structure of the new
compound (HL) was confirmed by using FT-IR spectra, 1H-NMR and 13CNMR
spectra and mass spectra (MS). The effect of chloroform and
dichloromethan as organic solvents in the metal extractions was investigated at
20oC by using UV-visible Spectrometry. The influence of pH, ligand
concentration, shaking time and ratio of aqueous-to-organic phases on
extraction yield was tested at 20oC. The extractability of the tested metal ions
were evaluated.
A new acyclic Schiff Base(II), containing nitrogen-oxygen donor atoms was
synthesized by reaction of 1,2-Bis (5-bromo-2-formyl-phenoxy) ethane with 2-
(2-Aminoethyl)pyridine and characterized. The liquid-liquid extraction of
transition metals such
as Cu+2, Cr+3 and Uranyl-picrate (UO2)+2 from aqueous
phase to the organic phase was carried out using the novel ligand. The effect of
chloroform and nitrobenzene as organic solvents on the metal extractions was
investigated at 20oC by using Atomic Absorption and UV-visible
Spectrophotometry. The influence of pH, ligand concentration, ionic strength,
shaking time and ratio of aqueous-to-organic phases on extraction yield was
tested at 20oC. The extractability of the tested metal ions were valuated.
In this research we have synthesized a new macrocyclic Schiff base (II)
containing nitrogen- oxygen donor atoms which was designed and synthesized
by reaction of: 1,4– bis (6',6'- methoxy -3- formyl phenyl)-1,4- dioxa butane (I).
Identification of
this macrocyclic schiff base: (II) 1,16- Diaza–[3,6;11,14-di
(6',6'- methoxy phenyl)]-7,10,19,22 - tetraoxa cyclo tetra icozane-15,1dien was
determined by (LC-MS) and spectroscopy (IR). The liquid- liquid extraction of
metal such as Zn2+, Pb2+ and Ni2+ from aqueous phase to organic phase which
doesn't in water. The effect of chloroform and dichloromethane as organic
solvents over the metal extractions was investigated at 25± 0.10C by using
atomic absorption Spectrometer and extraction percentage was calculated.
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