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  • 1
    Electronic Resource
    Electronic Resource
    Cell cycle Archipelago of destruction (2001)
    [s.l.] : Nature Publishing Group
    Nature 413 (2001), S. 268-269 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The cell cycle is the process by which cells grow, replicate their genome, segregate the two copies of the genome, and divide. The progression of these events is controlled by enzymes known as cyclin-dependent kinases (CDKs), whose activity in turn depends on their association with proteins called ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/35095157
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  • 2
    Electronic Resource
    Electronic Resource
    Fluorsubstituierte 1,2-Thiazetan-3-on-1-oxide durch Reaktion von Bis(trifluormethyl)keten mit N-Sulfinylaminen (1986)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 119 (1986), S. 1127-1132 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Fluorine-substituted 1,2-Thiazetan-3-one 1-Oxides by Reaction of Bis(trifluoromethyl)ketene and N-Sulfinylamines4,4-Bis(trifluoromethyl)1,2-thiazetan-3-one 1-oxides 3a-e are prepared by the reaction of bis(trifluoromethyl)ketene (1) with some N-sulfinylamines 2a-e. Under hydrolytic conditions the amides of 3,3,3-trifluoro-2-(trifluoromethyl)propionic acid 4a-e are formed, which are also obtained from 1 and the corresponding amines, especially C6F5NH2 and CF3NH2. 3e undergoes an unexpected thermolysis at room temperature with partial formation of trifluoromethyl isocyanate (5) and bis(trifluoromethyl)methylene sulfoxide (6).
    Notes: Die 4,4-Bis(trifluormethyl)-1,2-thiazetan-3-on-1-oxide 3a-e werden durch Reaktion von Bis(trifluormethyl)keten (1) mit einigen N-Sulfinylaminen 2a-e dargestellt. Unter Hydrolysebedingungen bilden sich die Amide der 3,3,3-Trifluor-2-(trifluormethyl)propionsäure 4a-e, die auch aus 1 und den entsprechenden Aminen, insbesondere C6F5NH2 und CF3NH2, erhalten werden. 3e erfährt eine unerwartete Thermolyse bei Raumtemperatur unter teilweiser Bildung von Trifluormethylisocyanat (5) und Bis(trifluormethyl)methylensulfoxid (6).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19861190404
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  • 3
    Electronic Resource
    Electronic Resource
    Bis(trifluormethyl)sulfin, (CF3)2C=SO: Additionsreaktionen mit Thiolen, Amin-N-oxiden, Ethern und 1,3-Dipolen (1988)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 121 (1988), S. 75-79 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Bis(trifluoromethyl)sulfine, (CF3)2C=SO: Addition Reactions with Thiols, Amine N-Oxides, Ethers, and 1,3-DipolesBis(trifluoromethyl)sulfine ([bis(trifluoromethyl)methylene]sulfoxide, 8) reacts with thiols via sulfinic acid S-esters as intermediates, e.g. 6 and 7, to give unsymmetrically substituted disulfanes 1 and 2. The sulfinic acid ethyl ester 9 is obtained under UV irradiation in ethers as well as directly from 8 and ethanol. Pyridine-N-oxide and 8 react via a cycloadduct yielding a hexafluoroisopropyl-substituted pyridine 10. From 8 and several diazoalkanes the 2,5-dihydro-1,3,5-thiadiazole 1-oxides 11, 12 and 13 were formed, the structures of which were proved by subsequent reactions. 8 and benzonitrile oxide unexpectedly from the 1,5,2-oxathiazole 5-oxide 14.
    Notes: Bis(trifluormethyl)sulfin ([Bis(trifluormethyl)methylen]sulfoxid, 8) reagiert mit Thiolen über intermediäure Sulfinsäure-S-ester, z. B. 6 und 7, zu unsymmetrisch substituierten Disulfanen 1 und 2. Der Sulfinsäure-ethylester 9 entsteht sowohl bei UV-Bestrahlung von 8 in Ethern, als auch direkt aus 8 und Ethanol. Aus Pyridin-N-oxid wird über ein Cycloaddukt das Hexafluorisopropyl-substituierte Pyridin 10 gebildet. Mit verschiedenen Diazoalkanen erhält man aus 8 die 2,5-Dihydro-1,3,4-thiadiazol-1-oxide 11, 12 und 13, deren Strukturen durch Folgereaktionen abgesichert wurden. 8 und Benzonitriloxid ergeben unerwarteterweise das 1,5,2-Oxathiazol-5-oxid 14.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19881210112
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  • 4
    Electronic Resource
    Electronic Resource
    Bis(trifluormethyl)sulfin, (CF3)2C=SO: Additionsreaktionen mit Aminen, Alkoholen, Halogenwasserstoffen und Dienen (1986)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 119 (1986), S. 2458-2465 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Bis(trifluoromethyl)sulfine, (CF3)2C=SO: Addition Reactions with Amines, Alcohols, Hydrogen Halides, and DienesContrary to other sulfines, bis(trifluoromethyl)sulfine (bis(trifluoromethyl)methylene sulfoxide, 7) reacts with amines, alcohols, and hydrogen chloride yielding derivatives of the corresponding sulfinic acid (1-3; 4-6,8,9; 10). By the reaction with hydrogen bromide the C-brominated sulfenyl bromide 11 and sulfinyl bromide 14 are formed via a redox reaction. 7 reacts with 2,3-dimethylbutadiene and cyclopentadiene to give the corresponding cyclic adducts 16 and 18, respectively, which with m-chloroperbenzoic acid could be oxidized to the cyclic sulfones 17 and 19.
    Notes: Im Gegensatz zu anderen Sulfinen reagiert Bis(trifluormethyl)sulfin ([Bis(trifluormethyl)-methylen]sulfoxid, 7) mit Aminen, Alkoholen und Chlorwasserstoff zu den entsprechenden Sulfinsäurederivaten (1-3; 4-6,8,9; 10). Die Umsetzung mit Bromwasserstoff führt über eine Redox-Reaktion zu C-bromiertem Sulfenylbromid 11 und Sulfinylbromid 14. Mit 2,3-Dimethylbutadien und Cyclopentadien reagiert 7 zu den entsprechenden Cycloaddukten 16 und 18, die sich mit m-Chlorperbenzoesäure zu den cyclischen Sulfonen 17 und 19 oxidieren lassen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19861190806
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