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Browsing Issue 06 by Title

Browsing Issue 06 by Title

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  • Study of Lead Pollution in Air, Soil and Water Samples of Quetta City 
    MUZAFFAR KHAN; KHAN, GHULAM MUSTAFA; SHER AKBAR; PANEZAI, MUHAMMAD ANWAR; TALAT ZAMIR; ZIA-UL-HAQ (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-12-20)
    This study briefly presents the collected data of lead pollution in the environment of Quetta City in Balochistan, Pakistan .The samples were collected from different sites. The analysis of lead was carried out in underground ...
  • Synthesis and Characterizations of New 1,3-Oxazine Derivatives 
    OZTURKCAN, S. ARDA; KADIR TURHAN; ZUHAL TURGUT (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-12-20)
    In this study, Betti's classical procedure, a Mannich-type aminoalkylation reaction of 2- naphthol with various aldehydes was applied in the presence of ammonia and then 1,3disubstituted-2,3-dihydro-1H-naphtoxazines were ...
  • Synthesis of Substituted Pyrimidin-4(1H)-one (Uracil) Derivatives and Some of Their Reactions 
    MOHAMMAD BARMAKI (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-12-20)
    In this paper I described two practical routes for the synthesis of substituted Uracilderivatives and achieved some of their reactions. In the first synthesis which is based on the condensation reaction of ethyl 2- ...
  • Synthesis of Unsymmetrical 1, 4-Dihydropyridine Derivatives in Ionic Liquid and Inference on the Formation Mechanism of Furopyridines 
    JIAN ZHANG; JIN, LONG FEI (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-12-20)
    Aromatic aldehydes, methyl acetoacetate, ethyl acetoacetate, ammonium acetate, ethyl 4-chloroacetoacetate as materials, eight unsymmetrical 1, 4-dihydropyridine derivatives were synthesized in ionic liquid [Bmim]OH in short ...
  • Ultrasound-Assisted Emulsification–Microextraction Combined with Flame Atomic Absorption Spectrometry for Determination of Trace lead in Water Samples 
    LI, JING CI; ZHANG, JING WEN; WANG, YU KUN; XIN DU; MA, JING JUN; GAO, HE QING (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-12-20)
    The process of ultrasound-assisted emulsification–microextraction (USAEME) was successfully applied for the extraction and preconcentration of trace lead from water samples, prior to flame atomic absorption spectrometry ...
  • Vindoline and its Reactions 
    INAM-UL-HAQUE; HINA SABA (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-12-20)
    Vindoline is a major alkaloid from the leaves of Vinca roseus Linn. (Catharanthus roseus G. Don) Apocynaceae. Chemically vindoline lacks physiological activity alone but is contained as the pentacyclic moiety in the ...

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