[ad_1] ABSTRACT Concentrations of 16 priority polycyclic Aromatic Hydrocarbons (PAHs) were determined in30 brands of Nigerian and imported pastas in Nigerian market. The pasta samples werecategorised into (1) noodles (2) spaghetti and (3) macaroni. Analysis…
Read More[ad_1] ABSTRACT The Industrial development of a nation could be achieved through theeffective and efficient utilization of the available raw materials and CeramicIndustries are some of the enterprises that rely heavily on such rawmaterials. Kebbi…
Read More[ad_1] CHAPTER ONE 1.0 Introduction Investigation on 4-acyl-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one (4-acylpyrazol-5-one) and its transition metal complexes has attracted significant attention because of their applications as extractants1, antipyretic2, analgesic3, antitubercular4, antimycobacterial5, antibacterial6, antifungal7, and antineoplastic8 drugs. 4-acylpyrazol-5-one, is an…
Read More[ad_1] ABSTRACT In this study, a series of N-pyridin-3-yl substituted [phenylsulphonamido]acetamide has been synthesized. The reaction of phenylsulphonyl chloride withvarious amino acids in basic medium yielded phenylsulphonamido alkanoic acidwhich, on chlorination with thionyl chloride,…
Read More[ad_1] ABSTRACT Zinc Oxide (ZnO) nanowires with hexagonal structure were successfully synthesized by chemical bath deposition technique. The obtained nanowires were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), energy dispersive X-ray analysis (EDX)…
Read More[ad_1] CHAPTER ONE 1.0 INTRODUCTION 1.1 BACKGROUND OF THE RESEARCH Nanocrystalline semiconductors have been the subject of intense research 1 due to their unique physical and chemical properties2,3. Evidence shows that reducing the particle (grain) size…
Read More[ad_1] ABSTRACT Palladium catalysed synthesis of substituted 2-[acetyl(phenylsulphonyl)amino]-3-methylbutanamide (176) is reported. The intermediate 2-[acetyl(phenylsulphonyl)amino]-3-methybutanamide (175) was obtained by the reaction between 2-[acetyl(phenylsulphonyl)amino]-3-methybutanoic acid chloride (175) and ammonia. Substituted 2-[acetyl (phenylsulphonyl)amino]-3-methylbutanamides (176a-f) were obtained by…
Read More[ad_1] ABSTRACT The synthesis of some disperse dyes base on anthraquinone was achieved by coupling diazotised 1-aminoanthraquinone and tetrazotised 1,4-diaminoanthraquinone respectively with pyridone derivatives. The identity of the resultant dyes were investigated using UV-visiblespectrophotometry,…
Read More[ad_1] ABSTRACT The synthesis of ten new alkynylated derivatives of angular phenoxazine and alkynylatednaphthoquinone was thoroughly investigated. The first intermediate, 6-chloro-5Hbenzo[a]phenoxazin-5-one was obtained by the condensation of 2-aminophenol with 2,3-dichloro-1,4- naphthoquinone in the presence of…
Read More[ad_1] ABSTRACT The syntheses of benzothiazinophenothiazine derivatives from simple heterocyclic compounds asprecursors is described. Condensation of 2-aminothiophenol with 2,3-dichloro-1,4-naphthoquinone inan alkaline medium furnished a good yield of the intermediate, 6-chloro-5H-benzo[a]phenothiazin-5-one. Further condensation of the…
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