CHEMICAL PROBLEMS
TITLE
BENZAMINE DERIVATIVES: SYNTHESIS, CHARACTERIZATION AND BIOLOGICAL ACTIVITY STUDY
Abstract Our study is included the synthesis of a number of benzamide drivatives through two chemical processes. The first is the benzoylation of some aromatic amines containing a pyrimidine or a pyrazoline ring in their structures (A-G) using benzoyl chloride or p-chloronbenzoyl chloride in the presence of 1,4- dioxan as solvent productive (N1-N6, N13-N16) derivatives. […]
SYNTHESIS AND PHARMACEUTICAL ACTIVITY OF TRIAZOLE SCHIFF BASES WITH THEORETICAL CHARACTERIZATION
Abstract In the presence of ethanol solvent and glacial acetic acids, triazole reacted with different aromatic aldehydes such as 4-methoxybenzaldehyde, 4-hydroxybenzaldehyde, and benzaldehyde to form the imines group known as Schiff bases. Triazole Schiff bases are triazole hydrazone and their derivatives, VA, VB, and VC. The structures of these synthetic triazole hydrazone derivatives were characterized […]
COMPLEX COMPOUNDS OF PALLADIUM (II) WITH γ – GLUTAMIC ACID AMIDE
Abstract This study examined the formation of palladium (II) complex compounds with γ-glutamic acid amide in aqueous solutions and calculated the complex stability constants, also known as formation constants. After the complexes were separated from one another, each compound's structure and characteristics were studied individually. Based on data from NMR, IR, and UV spectroscopy it […]
SYNTHESIS OF FIRE RETARDANT WITH PHOSPHORUS AND METAL FOR PRESERVATION AND REACH OF REDUCTION OF FLAMMABILITY OF TEXTILE MATERIALS
Abstract In this article, the optimal conditions for synthesizing a new flame retardant based on pentaerythritol, phosphoric acid, and magnesium hydroxide are studied. In this case, the molar ratio of the initial substances was 3.64:1, and the synthesis duration was four hours. After the completion of this process, different (1, 3, and 5%) solutions of […]
CRYSTAL STRUCTURE AND HIRSHFELD SURFACE ANALYSIS OF 4-{2,2-DICHLORO-1-[(E)-(2,4-DICHLOROPHENYL)DIAZENYL]ETHENYL}-N,N-DIMETHYLANILINE
Abstract In the title compound, C16H13Cl4N3, the dihedral angle between the benzene rings of the dichlorophenyl and dimethylaniline groups is 50.85 (13)°. The central –N=N– unit shows an E configuration. In the crystal, molecules form parallel layers to the (100) plane by C—H···π and face-to-face π-π [centroid-to-centroid distances = 4.0538 (17) and 4.0537 (17) Å] […]
GREEN METHOD FOR THE SPECTROPHOTOMETRIC DETERMINATION OF PHENYLEPHRINE AND TERBUTALINE PHARMACEUTICAL FORMULATIONS
Abstract Determination and evaluation active substances in chemical settings is extremely difficult, linked to chemical waste in water sewage, and may eventually have an influence on public health. As a result, efforts are being made globally to find other, perhaps less hazardous ways. Hereby, we aimed to determine two pharmaceutical products for the detection of […]
PHASE FORMATION IN THE FeSb2S4-FeLn2S4 SYSTEM, SYNTHESIS AND PROPERTIES OF COMPOUNDS OF THE FeLnSbS4 (Ln=Nd, Er) TYPE
Abstract Phase formation in the FeSb2S4-FeNd2S4 and FeSb2S4-FeEr2S4 systems were studied by means of differential thermal analysis, X-ray diffraction technique, microstructural analysis and microhardness measurement. Phase diagrams of the title systems have been constructed and the formation of a quaternary sulfosalt with the FeLnSbS4 composition has been established. The compounds FeNdSbS4 and FeErSbS4 melt congruently […]
CHEMICAL CHARACTERIZATION OF ECO-FRIENDLY RECOVERY METHOD FOR RUBBER FROM WASTE TIRES
Abstract Recycling of waste tires is the goal of many studies, where the chemical dissolution method depends on the recovery of tire rubber (TR) and carbon black (CB) from the waste tires. Petroleum ether was used to dissolve tire powder and a black solution was produced which after refluxed at 140°C for two hours with […]