CJ-VOLUME 02 ISSUE 05 SEPTEMBER 2012


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Volume 2 Issue 5, September 2012

Chemistry Journal

ISSN

2049-954X

Publication Frequency

6 Issues per year

Pages

158-184

Publication History


Original Articles

Action of Some Heterocyclic Amines and Difunctional Nucleophiles on N-Phenylsulphonylox-ytetra-chlorophthalimide

M.A. Hassan, A.M.M. Younes, M.M.Taha and A.H. Abdel-Monsef

Pages 158-165


Characterization of Carbonaceous and Nitrogenous Species during the Reductive and Oxida-tive Combustion of Biomass: Case of Millet Stalks

Salifou Koucka Ouiminga, Thomas Rogaume, Arsène H. Yonli1, Alfa Oumar Dissa and Jean Koulidiati

Pages 166-173


Study on Military Polyurethane Adhesive

Changming Zhang, Zhanggen Huang, Jun Ping Li and Xiao Juan Lu

Pages 174-178


Short Time One-Spot Synthesis of 2, 4, 5-Trisubstituted Imidazoles Using Morpholinium Hydrogen Sulfate as Green and Reusable Catalysts

Adel A. Marzouk, V.M. Abbasov and Avtandil H. Talybov

Pages 179-184



Title

Action of Some Heterocyclic Amines and Difunctional Nucleophiles on N-Phenylsulphonyloxytetrachlorophth-alimide

Abstract

N-phenylsulphonyloxytetrachlorophthalimide(1) is found to be a useful inter-mediate for the synthesis of tetrachloroquinazoline derivatives. Quinazolindiones have demonstrated utility in a diverse range of medical and biological applications. Treatment of compound (1) with the appropriate heterocyclic amines and diamines gave a new set of 3-subistuted tetrachloroquinazoline via Lossen Rearrangement. The aim of the present study is the synthesis of new quinazoline derivatives via a new synthetic route. The ne-wly synthesiz-ed compounds were characterized by IR, 1H NMR and mass spectral studies. The synthesized compounds were evaluated for their preliminary in vitro antibacterial activity towards Salmonella typhi, Staphylococcus aureus, and Bacillus cereus.

Keywords

N-phenylsulphonyloxytetrachlorophthalimide; 2-amino-5-methyl-1,3-4-thiadiaz-ole; Sulphadi-azine; 3-aminoqui-nazolin-2,4-dione; Nucleophilic Attack; Inter-nal Condensation Reaction

 

Title

Characterization of Carbonaceous and Nitrogenous Species during the Reductive and Oxidative Combustion of Biomass: Case of Millet Stalks

Abstract

Millet stalks are used as fuel in pottering crafting in Africa. A study was conducted to characterize the gaseous species produced during the reductive and oxidative combustion of millet stalks. The experiment was carried out on temperature ranging from 800-1000 oC, using the tubular furnace, coupled with two gas analyze-rs i.e. Analyzer Fourier Transforms Infrared (FTIR) analyzer and a non-dispersive infrared (NDIR) as experimental apparatus. The gaseous products analyzed are i.e. CO, CO2, CH4, C3H8, C2H4, C2H2, C6H6, HCN, N2O, NO, NO2 and NH3. The results show that, in reducing conditions, the levels of carbon monoxide (CO), methane (CH4) and acetylene (C2H2) are increasing functions of temperature, while emissions of CO2 and benzene (C6H6) decrease as the temperature increases. Emi-ssions of other compounds were remained relatively stable. Reductive combustion produced various compounds like CO2, CO, N etc. while oxidative combustion produced compounds like light hydrocarbon, benzene etc. The over all efficiency of conversion was found about 15%.

Keywords

Combustion, Millet Stalks, Carbon, Nitrogen

Title

Study on Military Polyurethane Adhesive

Abstract

A military polyurethane adhesive, containing two components, was developed. Through a series of studies, the appropriate preparation conditions and correspon-ding determination methods were established. The important characteristics, like include the content of isocyanate, hydroxyl value and bond strength, of component A, component B and JA-1 glue comprehensively were determined. The results show that the developed products have fine performance and showing good repeatability in analysis. The storage problem of JA-1 glue was also investigated. The JA-1 glue was laid aside for 6 months; the variation rules between the isocyanate content and the bonding strength were experimented. The final result is that for smallest change of bond strength, the most optimum of isocyanate content are from 7.5 to 8.0 (W%).

Keywords

Polyurethane Adhesives, Isocyanate Content, Bonding Strength          

Title

Short Time One-Spot Synthesis of 2, 4, 5-Trisubstituted Imidazoles Using Morp-holinium Hydrogen Sulfate as Green and Reusable Catalysts

Abstract

Morpholinium hydrogen sulfate as Brønsted acidic ionic liquid was used as an efficient and reusable catalyst for the one-pot synthesis of 2,4,5-trisubstituted under thermal solvent-free conditions in excellent yields and very short time reactions.

Keywords

2, 4, 5-triarylimidazoles, Morpholinium Hydrogen Sulphate, Reusable Catalysts