Egyptian Journal of Chemistry, Volumes 24-25National Information and Documentation Centre, 1981 - Chemistry |
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Page 151
... hydrogen is hydrogen bonded to amino nitrogen atom , whereas in case of N- ( phenyl ) -3 - mercaptopropionamide a six mem- bered ring structure ( 10-11 ) has been observed in which sulphydryl hydrogen is hydrogen bonded to carbonyl ...
... hydrogen is hydrogen bonded to amino nitrogen atom , whereas in case of N- ( phenyl ) -3 - mercaptopropionamide a six mem- bered ring structure ( 10-11 ) has been observed in which sulphydryl hydrogen is hydrogen bonded to carbonyl ...
Page 195
... Hydrogen Bonds . Part I. A.A. Taha , W.S. Higazy and A.M. Emara Department of Chemistry , University College for Girls , Ain Shams University , Cairo , Egypt . THE HE INTERACTION of trifluoroacetic acid with benzophenone , 4 ...
... Hydrogen Bonds . Part I. A.A. Taha , W.S. Higazy and A.M. Emara Department of Chemistry , University College for Girls , Ain Shams University , Cairo , Egypt . THE HE INTERACTION of trifluoroacetic acid with benzophenone , 4 ...
Page 491
... hydrogen migration producing nitrile ions ( II ) and imino ether ions ( III ) which rearrange ( 1-3 , hydrogen or R migration ) to give benzamide ion ( IV ) which undergo the normal fragmentation to give ion ( V ) . Ions III and V ...
... hydrogen migration producing nitrile ions ( II ) and imino ether ions ( III ) which rearrange ( 1-3 , hydrogen or R migration ) to give benzamide ion ( IV ) which undergo the normal fragmentation to give ion ( V ) . Ions III and V ...
Contents
Kharj water and its utilisation as irrigation water with special refe | 13 |
Dehydration of ethanol over hydrofluoric acidtreated alumina using | 83 |
Synthesis of some thiophenotropilidenes and their reaction with metal | 91 |
6 other sections not shown
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absorption acetic acid activity adduct alcohol amide amines amino acid analysis analytical anions aromatic atom band benzene bromide Cairo Cairo University Calcd catalyst chelates Chem chemical chloride cm-¹ complexes compounds concentration corresponding crystals curves decrease derivatives determined dioxane EDTA Egypt electron epoxidized ester ethanol ether ethyl ethylene Experimental filtered formation hydrazine hydrochloric acid hydrogen hydrolysis increase infrared investigation ligand metal ion method mole molecule National Research Centre nitrogen obtained oxidation peptide phenyl phosphite precipitate prepared presence proton pyridine rate constant ratio reacted reaction mixture reagent recrystallized refluxed residue resin resorcinol revised form samples showed sodium solution solvent spectra spectrophotometric spectrum stability structure studied substituent synthesis Table temperature thiourea titration trimethyl phosphite values yield أن القاهرة المركز القومى للبحوث تم جامعة دراسة عبد على كلية محمد وقد