Global Journal of Pure and Applied Chemistry Research (GJPACR)

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Synthesis, Characterization and Biological Activity of Two Phenol- Schiff Bases and Formaldehyde Resin Cobalt (Ii) – Complexes.

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Transition metal, cobalt (II) acetate, complexes of salicylaldehyde derived Schiff bases : 2-{[(2- hydroxophenyl) imino] methyl} phenol (OHMP), 2-{[ (2- carboxy- phenyl) imino] methyl} phenol (COOHMP), and anthranilic acid- formaldehyde resin (R-COOHMP) were synthesized and characterized by various analytical and spectroscopic studies ( FT-IR, UV-Visible and 1H NMR ). The Schiff base ligands,  formaldehyde chelating […]

Synthesis, Characterization and Biological Activity of Two Phenol- Schiff Bases and Formaldehyde Resin Cobalt (Ii) – Complexes. Read More »

Optical Properties of Composite Resol Novolac Resin (RNR) Doped with Rhodamine 6g

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Optical characteristics of Resol Novolac Resin (RNR) films doped with different ratios of Rhodamine 6G (0.01,0.03, 0.05, 0.05, 0.07, 0.1)% wt. were studied. The composite films prepared using casting technique, the optical absorption spectra of these films in the wavelength range from 200-800 nm. The result showed that the optical absorption is due to direct

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Synthesis of New Higher Homologues of Quisqualic Acid

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The compounds such as methyl 2-(tert-butoxycarbonyl)-4-(3,5-dioxo-4-phenyl-1,2,4-oxadiazolidin-2-yl)butanoate and 2-amino-4-(3,5-dioxo-4-phenyl-1,2,4-oxadiazolidin-2-yl)butanoic acid, higher homologues of quisqualic acid, have been synthesized in a first time via N-alkylation reaction of 4-phenyl-1,2,4-oxadiazolidine-3,5-dione by alkyl 2-(tert-butoxycarbonyl)-4-iodobutanoate in presence of potassium carbonate as base in dry acetone. The structures of the synthesized compounds were established by 1H-NMR, MS data and elemental analysis. 

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Chemical Composition and Differentiation of Essential Oils of Morocco’s Different Varieties of Thyme

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This study aims at analysing the chemical composition of the essential oils (E.O.) of four varieties of thyme (Thymus broussonetii, Thymus satureioides, Thymus zygis and Thymus vulgaris) and their comparison; through the principal components analysis (PCA) method; with new species of thyme (T. riatarum, lepobotrys T and T. munbyanus), previously studied by M. El Idrissi

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Green Chemistry: a Panacea for Environmental Sustainability Agriculture in Global Perspective

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The environment is a very important component necessary for the existence of both man  through agriculture. Agriculture is one of the oldest and global sources of human livelihood. Producing food, transportation, and energy for teeming population  has led to large and widespread increases in the use of synthetic nitrogen (N) fertilizers and fossil fuel combustion,

Green Chemistry: a Panacea for Environmental Sustainability Agriculture in Global Perspective Read More »

Preparation and Characterization of Some New Complexes of Schiff Bases Derived From Benzoin and Glycine

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A new series of complexes containing benzoin and glycine compounds were prepared as ligands, ligand was prepared by the reacting between benzoin and glycine to give the corresponding Schiff base compound ((E)-2-((2-hydroxy-1,2-diphenylethylidene) amino) propanoic acid). The complexes M(HDPENP)2 – of Cu(II), Ni(II), Co(II), Zn(II) and Fe(II) contaning Schiff base compound has been synthesized by the

Preparation and Characterization of Some New Complexes of Schiff Bases Derived From Benzoin and Glycine Read More »

Synthesis and Characterization of New Oxime-Formaldhyde Polymer and Their Biological Activities

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Synthesis polymer by condensation of 4- hydroxyl benzaldehyde oxime (HBO) formaldehyde (F) and p-amino, p-nitro,p-hydroxy substituted acetophenones (A) at different conditions. The polymers were characteristic by FT-IR and CHN data and thermo gravimetric analysis, studied the geometrical optimization of this polymer by PM3 method and, the antibacterial and antifungal activities of polymers were also screened

Synthesis and Characterization of New Oxime-Formaldhyde Polymer and Their Biological Activities Read More »

Bifunctionalized Allenes. Part Xviii. Synthesis Of 2,5-Dihydro-1,2-Oxaphospholes And 2-Phosphoryl-2,5-Dihydrofurans By Electrophilic Cyclization And Coinage Metal-Catalyzed Cycloisomerization Of Phosphorylated 3-(-Hydroxy) Allenes

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A convenient and efficient regioselective synthesis of phosphorylated 3-(-hydroxy)allenes by an atom economical [2,3]-sigmatropic rearrangement of the mediated propargyl phosphite or phosphinite which can be readily prepared via reaction of protected 1,2,4-triphenyl-1-(tetrahydro-2H-pyran-2-yloxy)-but-3-yn-2-ol with dimethyl chlorophosphite or chlorodiphenyl phosphine respectively is described. This paper discusses a reaction of phosphorylated 3-(-hydroxy)allenes with protected or unprotected hydroxy group

Bifunctionalized Allenes. Part Xviii. Synthesis Of 2,5-Dihydro-1,2-Oxaphospholes And 2-Phosphoryl-2,5-Dihydrofurans By Electrophilic Cyclization And Coinage Metal-Catalyzed Cycloisomerization Of Phosphorylated 3-(-Hydroxy) Allenes Read More »

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