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  • 1
    Electronic Resource
    Electronic Resource
    Die Sauerstoff-Funktion im C-Toxiferin II (1957)
    Springer
    Naturwissenschaften 44 (1957), S. 376-376 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00629452
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  • 2
    Electronic Resource
    Electronic Resource
    Stabile Carbeniumionen, 27. DiarylchlorcarbeniumionenHerrn Prof. Dr. G. Pfleiderer zum 60. Geburtstag gewidmet. (1981)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1981 (1981), S. 1415-1418 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Stable Carbenium Ions, 271). - Diarylchlorocarbenium IonsDiarylchlorocarbenium hexachloroantimonates have been prepared as crystalline salts and are characterised.
    Notes: Diarylchlorcarbenium-hexachloroantimonate werden als kristalline Salze dargestellt und charakterisiert.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198119810810
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  • 3
    Electronic Resource
    Electronic Resource
    Stabile Carbeniumionen, 28. α,α′-Dihalogen-α,α′-diphenyl-m-phenylendicarbeniumionenHerrn Prof. Dr. G. Fritz zum 60. Geburtstag gewidmet. (1981)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1981 (1981), S. 1419-1423 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Stable Carbenium Ions, 281). - α,α′-Dihalogen-α,α′-diphenyl-m-phenylenedicarbenium Ionsα,α′-Difluoro-α,α′-diphenyl-m-phenylenedicarbenium hexafluoroantimonate and α,α′-dichloro-α,α′-diphenyl-m-phenylenedicarbenium hexachloroantimonate are prepared as crystalline salts and are characterised.
    Notes: α,α′-Difluor-α,α′-diphenyl-m-phenylendicarbenium-hexafluoroantimonat und α,α′-Dichlor-α,α′-diphenyl-m-phenylendicarbenium-hexachloroantimonat werden als kristalline Salze dargestellt und charakterisiert.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198119810811
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  • 4
    Electronic Resource
    Electronic Resource
    Cytochrom-P-450-Modellreaktionen. - Isolierung und Charakterisierung von Mangan(IV)- und Mangan(V)-Porphyrin-Komplexen (1989)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1989 (1989), S. 171-175 
    Details
    ISSN: 0170-2041
    Keywords: Carbon oxygenation ; Epoxidation ; Manganese(IV) porphyrins ; Monooxygenase model ; Nitridomanganese(V) porphyrins ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Cytochrome P-450 Model Reactions. - Isolation and Characterization of Manganese(IV)- and Manganese(V)-Porphyrin ComplexesThe isolation at  -  78°C and characterization of the crystalline reactive Mn(IV)-phorphyrin complex TDCPPMn(IV)(C6H5IOCl)2 (3) is described. 3 is compared with the also synthesized manganese-phorphyrin complexes TDCPPMn(IV)(OCH3)2 (4) and TDCPPMn(V)N (5). The stoichiometric reaction of 3 with triphenylphosphine yields 2.5 equivalents of triphenylphosphine oxide, 1.0 equivalent of TDCPPMn(III)Cl (2), and 2.0 equivalents of iodobenzene. Olefins are epoxidized and cyclohexane is oxygenated by 3. With NH3, 3 reacts to the Mn(V)-nitrido complex TDCPPMn(V)N (5). Oxygenation reactions of the system TDCPPMn(III)Cl (2)/PhIO are described.
    Notes: Die Isolierung bei  -  78°C und Charakterisierung des kristallinen reaktiven Mn(IV)-Porphyrin-Komplexes TDCPPMn(IV)(C6H5-IOCl)2 (3) wird beschrieben. 3 wird mit den ebenfalls dargestellten Mangan-Porphyrin-Komplexen TDCPPMn(IV)(OCH3)2 (4) und TDCPPMn(V)N (5) verglichen. Die stöchiometrische Umsetzung von 3 mit Triphenylphosphan führt zu 2.5 Äquivalenten Triphenylphosphanoxid, 1.0 Äquivalent TDCPPMn(III)Cl (2) und 2.0 Äquivalenten Iodbenzol. Olefine werden von 3 epoxidiert und Cyclohexan wird von 3 oxygeniert. Mit NH3 reagiert 3 zu dem Mn(V)-Nitrido-Komplex TDCPPMn(V)N (5). Oxygenierungsreaktionen des Systems TDCPPMn(III)Cl (2)/PhIO werden beschrieben.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198919890133
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  • 5
    Electronic Resource
    Electronic Resource
    Cytochrom-P-450-Modellreaktionen, 2. Isolierung und Charakterisierung eines Mangan(IV)-Pentafluoriodosylbenzol-Porphinato-Komplexes als Modell der aktiven Spezies im Katalysecyclus von Cytochrom-P-450Herrn Prof. Leopold Horner mit den besten Wünschen zum 80. Geburtstag gewidmet. (1992)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1992 (1992), S. 1097-1101 
    Details
    ISSN: 0170-2041
    Keywords: Manganese(IV) porphyrins ; Monooxygenase model ; Alkene epoxidation ; Alkane oxygenation ; Anthracene oxidation ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Cytochrome P-450 Model Reactions, 2.  -  Isolation and Characterization of a Manganese(IV)-Pentafluoroiodosylbenzene-Porphinato Complex as a Model of the Active Species of the Catalytic Cycle of Cytochrome P-450The isolation at -78°C and characterization of the crystalline reactive manganese(IV)-porphinato complex Mn(TDCPP)-(C6F5IOCl)Cl (4) is described. 4 is compared with the manganese(IV)-porphinato complexes Mn(TDCPP)(C6H5IOCl)2 (2) and Mn(TDCPP)(OCH3)2 (3). The stoichiometric reaction of 4 with triphenylphosphane yields 1.5 equivalents of triphenylphosphane oxide, 1.0 equivalents of Mn(TDCPP)Cl (1), and 1.0 equivalents of pentafluoro-iodobenzene. 4 epoxidizes stilbene, oxygenates cyclohexane, and oxidizes anthracene to anthraquinone.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.1992199201181
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  • 6
    Electronic Resource
    Electronic Resource
    Stabile Carbeniumionen, 26. Diarylfluorcarbeniumionen - 19F-NMR-spektroskopische Ermittlung von Substituenteneffekten in p-substituierten Diaryl-carbeniumionenHerrn Prof. Dr. Th. Wieland zum 65. Geburtstag gewidmet. (1981)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1981 (1981), S. 1407-1414 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Stable Carbenium Ions, 261). - Diarylfluorocarbenium Ions - 19F-NMR-spectroscopic Determination of Substituent Effects in p-substituted Diarylcarbenium IonsDiarylfluorocarbenium hexafluoroantimonates have been prepared as crystalline salts and are characterised. The 19F-chemical shift of the methine fluoroatom is used as a measure of the relative stability of the studied carbenium ions. The relations of this measure of stability to the stability of p-fluoro substituted triaryl carbenium ions, the s̰ +-constants of the corresponding substituents, the pKR+- -values of the corresponding diarylcarbinols, and the stabilisation energy of substituted methyl cations in the vapour phase are discussed.
    Notes: Diarylfluorcarbenium-hexafluoroantimonate werden als kristalline Salze dargestellt und charakterisiert. Die 19F-chemische Verschiebung des Methinfluoratoms wird als Maß für die relative Stabilität der untersuchten Carbeniumionen benutzt. Die Beziehungen dieses Stabilitätsmaßes zur Stabilität p-fluorsubstituierter Triarylcarbeniumionen, den ρ+-Konstanten der jeweiligen Substituenten, den pKR+- -Werten entsprechend substituierter Diarylcarbinole und den Stabilisierungs-energien substituierter Methylkationen in der Gasphase werden diskutiert.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198119810809
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  • 7
    Electronic Resource
    Electronic Resource
    Stabile Carbeniumionen, 29. Diarylhydroxycarbenium-perchlorate (1981)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1981 (1981), S. 1424-1428 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Stable Carbenium Ions, 291). - Diarylhydroxycarbenium PerchloratesDiarylhydroxycarbenium perchlorates are prepared as crystalline salts and are characterised.
    Notes: Diarylhydroxycarbenium-perchlorate werden als kristalline Salze dargestellt und charakterisiert.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198119810812
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  • 8
    Electronic Resource
    Electronic Resource
    Stabile Carbeniumionen, 31. Homo-Quadricyclyl-Kationen (1982)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1982 (1982), S. 480-488 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Stable Carbenium Ions, 311).  -  Homo-Quadricyclyl CationsMonohomo- (5) and bishomo-quadricyclyl cations (6) are prepared from their corresponding carbinols (7-9) in FSO3H/SO2ClF/(SO2F2) at temperatures from -125 to -120°C. The cations are characterized by 1H-, 13C-, 19F-NMR, and nucleophilic quenching reactions.
    Notes: Monohomo- (5) und Bishomo-Quadricyclyl-Kationen (6) werden aus den entsprechenden Carbinolen (7-9) in FSO3H/SO2ClF/(SO2F2) im Temperaturbereich von -125 bis -120°C erzeugt. Die Kationen werden durch 1H-, 13C-, 19F-NMR-Spektren und nucleophile Abfangreaktionen charakterisiert.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198219820310
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  • 9
    Electronic Resource
    Electronic Resource
    Das Ditropylium-Ion (1971)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 750 (1971), S. 136-148 
    Details
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Ditropylium IonDitropylium dihexachloroantimonate (6) has been prepared in over 70 per cent yield by reaction of antimony pentachloride with heptafulvalene (5). The possible mechanisms of this reaction as well as the 1H-NMR-, 13C-NMR-, UV- and IR-spectra of 6 are discussed. HMO and ω-technique-calculations are performed and correlated with experimental data.
    Notes: Das Ditropylium-dihexachloroantimonat (6) wird durch Umsetzung von Heptafulvalen (5) mit Antimonpentachlorid in über 70proz. Ausbeute dargestellt. Die für die Reaktion wahrscheinlichen Bildungsmechanismen sowie die 1H-NMR-, 13C-NMR-, UV- und IR-Spektren von 6 werden diskutiert. Sowohl für 5 als auch für 6 werden Berechnungen nach der HMO-Methode sowie der ω-Technik ausgeführt und diese mit den experimentellen Daten korreliert.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.19717500116
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  • 10
    Electronic Resource
    Electronic Resource
    Ein Beitrag zum Mechanismus der Polonovski-Reaktion (1972)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 763 (1972), S. 184-197 
    Details
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: A Contribution to the Mechanism of the Polonovski Reaction.N,N-Dimethyl-mesidine-N-oxide (1b) reacts with acetic anhydride to N-acetyl-N-methyl-mesidine (8b). N-Mesityl-N-methyl-methyleneimmonium perchlorate (5b) and N,N-diisopropyl-methyleneimmonium perchlorate (5c) react with tetramethylammonium acetate (TMA) in acetic anhydride with formation of 8b or N,N-diisopropylacetamide (8e), respectively. In chloroform/methylene chloride 5b reacts with TMA, depending on the order of addition, to N-formyl-N-methyl-mesidine (19) and N,N-dimethyl-mesidine (18), or to N-mesityl-N-methyl-aminomethyl acetate (6b). Acylating agents convert 5b to the various N-acyl-N-methyl-mesidines. Under the same reaction conditions 8b does not suffer transacylation when treated with the above used acylating agents.
    Notes: N.N-Dimethyl-mesidin-N-oxid (1b) reagiert mit Acetanhydrid zu N-Acetyl-N-methyl-mesidin (8b). N-Mesityl-N-methyl-methylenimmoniumperchlorat (5b) und N.N-Diisopropyl-methylen-immoniumperchlorat (5c) reagieren mit Tetramethylammoniumacetat (TMA) in Acetanhydrid zu 8b bzw. N.N-Diisopropyl-acetamid (8e). 5b setzt sich mit TMA in Chloroform/Methylenchlorid je nach Zugabefolge einmal zu N-Formyl-N-methyl-mesidin (19) und N.N-Dimethyl-mesidin (18) und zum anderen zu N-Mesityl-N-methyl-aminomethyl-acetat (6b) um. 6b reagiert mit Acylierungsmitteln zu den verschiedenen N-Acyl-N-methyl-mesidinen. 8b erleidet unter den gleichen Reaktionsbedingungen mit den eingesetzten Acylierungsmitteln keine Umacylierung.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.19727630120
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