Talab Sarra (9 results)
- Softcover
Seller: Books Puddle, New York, NY, U.S.A.Books Puddle
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- Softcover
Seller: preigu, Osnabrück, Germanypreigu
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Taschenbuch. Condition: Neu. A Novel Synthesis Of Isotopically Labelled L-Histidine | Sarra Talab | Taschenbuch | 120 S. | Englisch | 2019 | LAP LAMBERT Academic Publishing | EAN 9786139984787 | Verantwortliche Person für die EU: BoD - Books on Demand, In de Tarpen 42, 22848 Norderstedt, info[at]bod[dot]de | Anbieter: preigu.
- Softcover
Seller: Buchpark, Trebbin, GermanyBuchpark
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Condition: Hervorragend. Zustand: Hervorragend | Sprache: Englisch | Produktart: Bücher | In a few simple steps starting from a commercially available reagents benzyl chloride and potassium thiocyanate, thiocyanate is obtained which is directly reacted with glycine amide to give benzyl thiourea. The used of concentrated HCl give… the ring closed product of the latter. The alkylation of 3-benzyl-2- thioxoimidazolidin-4-one is made by the used of methyl iodide under basic condition. Subsequent treatment of the alkyl derivative 3-benzyl-2-(methylthio)-3,5dihydro-4-imidazole with diethyl phosphono cyanate gives the nitrile derivatives which upon treatment with sulphuric acid and functional group manipulations gave 1-benzyl-5-chloromethylimidazolium chloride. This compound is converted mildly under O¿Donnell conditions into the l- Histidine derivative. After deprotection L-Histidine is obtained in good yield with 99% enantiomeric excess. This synthetic scheme allows access to any isotopomer of L-histidine and many other biologically important imidazole derivatives.
Language: English
Published by LAP LAMBERT Academic Publishing Dez 2018, 2018
- Softcover
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Seller: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, GermanyBuchWeltWeit Ludwig Meier e.K.
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Taschenbuch. Condition: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -In a few simple steps starting from a commercially available reagents benzyl chloride and potassium thiocyanate, thiocyanate is obtained which is directly reacted with glycine amide to give benzyl thiourea. The used of concentrated…HCl give the ring closed product of the latter. The alkylation of 3-benzyl-2- thioxoimidazolidin-4-one is made by the used of methyl iodide under basic condition. Subsequent treatment of the alkyl derivative 3-benzyl-2-(methylthio)-3,5dihydro-4-imidazole with diethyl phosphono cyanate gives the nitrile derivatives which upon treatment with sulphuric acid and functional group manipulations gave 1-benzyl-5-chloromethylimidazolium chloride. This compound is converted mildly under O'Donnell conditions into the l- Histidine derivative. After deprotection L-Histidine is obtained in good yield with 99% enantiomeric excess. This synthetic scheme allows access to any isotopomer of L-histidine and many other biologically important imidazole derivatives. 120 pp. Englisch.
- Softcover
- Print on Demand
Seller: Majestic Books, Hounslow, United KingdomMajestic Books
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- Softcover
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Seller: moluna, Greven, Germanymoluna
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Kartoniert / Broschiert. Condition: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Talab SarraAssistant professor Organic chemistry,Chemistry Department, Collage of Science, Al Imam Mohammad Ibn Saud Isalmic University Riyadh Saudi ArabiaIn a few simple steps…starting from a commercially available reagents benz.
- Softcover
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Seller: Biblios, frankfurt am main, HESSE, GermanyBiblios
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Condition: New. PRINT ON DEMAND.
Language: English
Published by LAP LAMBERT Academic Publishing Dez 2018, 2018
- Softcover
- Print on Demand
Seller: buchversandmimpf2000, Emtmannsberg, BAYE, Germanybuchversandmimpf2000
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Taschenbuch. Condition: Neu. This item is printed on demand - Print on Demand Titel. Neuware -In a few simple steps starting from a commercially available reagents benzyl chloride and potassium thiocyanate, thiocyanate is obtained which is directly reacted with glycine amide to give benzyl thiourea. The used of concentrated HCl…give the ring closed product of the latter. The alkylation of 3-benzyl-2- thioxoimidazolidin-4-one is made by the used of methyl iodide under basic condition. Subsequent treatment of the alkyl derivative 3-benzyl-2-(methylthio)-3,5dihydro-4-imidazole with diethyl phosphono cyanate gives the nitrile derivatives which upon treatment with sulphuric acid and functional group manipulations gave 1-benzyl-5-chloromethylimidazolium chloride. This compound is converted mildly under O¿Donnell conditions into the l- Histidine derivative. After deprotection L-Histidine is obtained in good yield with 99% enantiomeric excess. This synthetic scheme allows access to any isotopomer of L-histidine and many other biologically important imidazole derivatives.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 120 pp. Englisch.
- Softcover
- Print on Demand
Seller: AHA-BUCH GmbH, Einbeck, GermanyAHA-BUCH GmbH
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Taschenbuch. Condition: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - In a few simple steps starting from a commercially available reagents benzyl chloride and potassium thiocyanate, thiocyanate is obtained which is directly reacted with glycine amide to give benzyl thiourea. The used of concentrated HCl g…ive the ring closed product of the latter. The alkylation of 3-benzyl-2- thioxoimidazolidin-4-one is made by the used of methyl iodide under basic condition. Subsequent treatment of the alkyl derivative 3-benzyl-2-(methylthio)-3,5dihydro-4-imidazole with diethyl phosphono cyanate gives the nitrile derivatives which upon treatment with sulphuric acid and functional group manipulations gave 1-benzyl-5-chloromethylimidazolium chloride. This compound is converted mildly under O'Donnell conditions into the l- Histidine derivative. After deprotection L-Histidine is obtained in good yield with 99% enantiomeric excess. This synthetic scheme allows access to any isotopomer of L-histidine and many other biologically important imidazole derivatives.
