Výsledky vyhledávání - "Khawla Al-Mallah"

Kinetics of the Deamination of Amides by Nitrous Acid

Autor: Khawla Al-Mallah, Geoffrey Stedman

Publikováno v: Journal of Chemical Research. :670-671

The kinetic profile of the rate constant for the nitrous acid–amide reaction in sulfuric acid as a function of acidity for a range of aliphatic and aromatic primary amides has been interpreted in terms of the HNO2/NO+ and the amide/amide·H+ equili

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::998fb70d66626c769b45a2c3bd70a8cd
https://doi.org/10.1039/a804600j

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Studies of tertiary amine oxides. 9. Thermal rearrangement of 1-(4-substituted) phenylpiperidine N-oxides to the corresponding N-hydroxylamines

Autor: Khawla Al-Mallah, Salim Y. Hanna, Noor Aldeen I. Abdulla, Abdul Hussain Khuthier

Publikováno v: The Journal of Organic Chemistry. 52:1710-1713

Des substituants electroattracteurs sont necessaires a la transposition, en position ortho ou para par rapport a la fonction N-O. L'ordre de reactivite dans cette transposition est NO 2 >>CN>COPh>COMe>COOEt>CONH 2 . Mecanisme cyclique intramoleculair

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ba9bd5802dad3bdc1c79de8b8d33aa11
https://doi.org/10.1021/jo00385a012

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ChemInform Abstract: Studies of Tertiary Amine Oxides. Part 13. Solvent Effects on the Rate of Thermal Rearrangement of N-(2,4-Dinitrophenyl)piperidine N-Oxide

Autor: S. Y. Hanna, A.-H. Khuthier, Khawla Al-Mallah

Publikováno v: ChemInform. 19

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::112a1d47d0fece989f52916e14fc839c
https://doi.org/10.1002/chin.198843093

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ChemInform Abstract: Studies of Tertiary Amine Oxides. Part 9. Thermal Rearrangement of 1-(4-Substituted-Phenyl)piperidine N-Oxides to the Corresponding N-Hydroxylamines

Autor: Khawla Al-Mallah, S. Y. Hanna, N.-A. I. Abdulla, A.-H. Khuthier

Publikováno v: ChemInform. 18

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d36126de6c38e3eb3aa8ab35a3e82740
https://doi.org/10.1002/chin.198740186

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ChemInform Abstract: Tertiary Amine Oxides. Part 7. Solvent Effects on the Rearrangement of N-Arylamine Oxides to O-Arylhydroxylamines

Autor: A.-H. Khuthier, S. Y. Hanna, Khawla Al-Mallah

Publikováno v: Chemischer Informationsdienst. 17

Rates (k) of isomerization of (Ia) correlate with the H-bonding ability of protic solvents such as (II) or THF - H2O mixtures.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7371611d7e0ca4d383311412fcb3b6ea
https://doi.org/10.1002/chin.198626106

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ChemInform Abstract: Tertiary Amine Oxides. Part 8. Rearrangement of N-(2,4-Dinitrophenyl)-piperidines and -morpholine N-Oxides in Aprotic Solvents

Autor: Khawla Al-Mallah, S. Y. Hanna, A.-H. Khuthier

Publikováno v: ChemInform. 18

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e28be60721ecb6687f677159ecf89d5b
https://doi.org/10.1002/chin.198724097

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ChemInform Abstract: ELECTROPHILIC NITROSATION AT SULPHUR AND NITROGEN IN THIOUREA

Autor: Geoffrey Stedman, Khawla Al-Mallah, Peter Collings

Publikováno v: Chemischer Informationsdienst. 6

Thiourea reacts rapidly with nitrous acid in aqueous solution to form an equilibrium concentration of a coloured S-nitroso-compound. The equilibrium constant has been measured, together with a preliminary value of the rate constant for the nitrosatio

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https://doi.org/10.1002/chin.197509106

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Studies of tertiary amine oxides. Part 7. Solvent effects on the rearrangement of N-arylamine oxides to O-arylhydroxylamines. The S Ni mechanism

Autor: Khawla Al-Mallah, Salim Y. Hanna, Abdul-Hussain Khuthier

Publikováno v: Journal of the Chemical Society, Perkin Transactions 2. :413

The rate of rearrangement of N-arylamine oxides (4) to O-arylhydroxylamines (5) was measured in different solvents. The rate of isomerisation of p-nitrophenyl N-oxides correlates with the dielectric constants of aprotic solvents and with the hydrogen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::390addc389f903819c324f753aa7f9b4
https://doi.org/10.1039/p29860000413

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Electrophilic nitrosation at sulphur and nitrogen in thiourea

Autor: Geoffrey Stedman, Peter Collings, Khawla Al-Mallah

Publikováno v: Journal of the Chemical Society, Dalton Transactions. :2469

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::df14d37cae8bc2794707aa09a05fb007
https://doi.org/10.1039/dt9740002469

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Studies of tertiary amine oxides. Part 8. Rearrangement of N-(2,4-dinitrophenyl)-piperidines and -morpholine N-oxides in aprotic solvents

Autor: Khawla Al-Mallah, Salim Y. Hanna, Abdul-Hussain Khuthier

Publikováno v: Journal of the Chemical Society, Perkin Transactions 2. :109

The N-oxides of N-(2,4-dinitrophenyl)-piperidines and -morpholine undergo thermal rearrangement to the substituted hydroxylamines. The kinetics of the rearrangement were studied in aprotic solvents at four or five temperatures. Steric and polar facto

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7fd5ea2f597356ae068b0a82d558272f
https://doi.org/10.1039/p29870000109

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