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Untersuchungen an Diazoverbindungen und Aziden, LV. 7‐(Diazomethyl)cycloheptatriene durch elektrophile Diazoalkansubstitution
Wiley - Tập 118 Số 4 - Trang 1315-1328 - 1985
Willi Bethäuser, Bernd Weber, H. Heydt, Manfred Regitz
Untersuchungen an Diazoverbindungen und Aziden, L1). 7‐Brom‐5‐(diazomethyl)‐5H‐benzocycloheptatriene – Synthese durch elektrophile Diazoalkansubstitution und Umwandlung in 8‐Brombenzocyclooctatetraene
Wiley - Tập 117 Số 10 - Trang 3093-3101 - 1984
Manfred Böhshar, H. Heydt, Manfred Regitz
AbstractDas Benzotropylium‐bromid 4 geht mit den Silber‐(diazomethyl)phosphorylverbindungen 5a–c in Dichlormethan elektrophile Diazoalkansubstitution zu den 5‐(Diazomethyl)‐5H‐benzocycloheptatrienen 6a–c ein; Isomerenbildung (4→7) wurde nicht beoba...... hiện toàn bộ
Bausteine von Oligosacchariden, XXXI. Synthese der Repeating‐Unit der O‐spezifischen Kette des Lipopolysaccharides des Bakteriums Escherichia coli O 75
Wiley - Tập 114 Số 9 - Trang 3115-3125 - 1981
Hans Paulsen, Oswald Lockhoff
AbstractDurch eine Synthese, bei der der Trisaccharidhalogenid‐Block 12 verwendet wird, läßt sich nach vollständiger Entblockierung das verzweigte Tetrasaccharid hiện toàn bộ
Enantioselektive Katalyse, 4. Synthese N‐substituierter (R,R)‐3,4‐Bis(diphenylphosphino)‐pyrrolidine und Anwendung ihrer Rhodiumkomplexe zur asymmetrischen Hydrierung von α‐(Acylamino)acrylsäure‐Derivaten
Wiley - Tập 119 Số 11 - Trang 3326-3343 - 1986
Ulrich Nagel, E. KINZEL, Juan G. Andrade, Günter Prescher
AbstractEine einfache Synthese von (R,R)‐3,4‐Bis(diphenylphosphino)pyrrolidin (6a) und verschiedenen N‐substituierten Derivaten 6b–m wird beschrieben. 61 und 6m sind optisch aktive Tetraphosphan...... hiện toàn bộ
Enantioselective Catalysis, XIII. Preparative and Structural Chemistry of Chiral 3‐(Diphenylphosphanyl)‐pyrrolidiens and Their Palladium(II) Complexes
Wiley - Tập 130 Số 3 - Trang 385-398 - 1997
Ulrich Nagel, Hans Günter Nedden
AbstractThe preparation of both enantiomers of 3‐diphenylphosphanulpyrrolidiine (2) and several N‐substituted derivatives together with two PdIi complexes of this ligand is reported. Form L‐malic acid and L‐hydroxyproline both enantiomers of 3‐hydroxypyrrolidine are prepared without any problems...... hiện toàn bộ
Deprotonierung und Substitutionsreaktionen dreikerniger Eisencluster Fe 3 (CO) 9 (H)(SR)
Wiley - Tập 115 Số 4 - Trang 1286-1304 - 1982
Andreas Winter, László Zsolnai, Gottfried Hüttner
Pyrylium Salts as Photosensitizers in Homogeneous and Heterogeneous Electron‐Transfer Catalysis. – A Comparison with Cyano Arenes
Wiley - Tập 122 Số 5 - Trang 951-958 - 1989
Jochen Mattay, Martin Vondenhof, R. Denig
AbstractTwo new triphenylpyrylium salts, both being fixed to a polymeric backbone, have been synthesized. They a sensitizers for photochemically induced electron‐transfer. reactions, offering the possibility of heterogeneous charge transfer. Their usability in electron‐transfer‐catalyzed dimerizations and mixed cycloadditions of 1,3‐cyclohexadiene and phenyl vinyl ...... hiện toàn bộ
Free‐Radical Coupling of Alkyl and Aryl Halides with Electron‐Deficient Alkenes Mediated by Chromium(II) Complexes[1]
Wiley - Tập 126 Số 7 - Trang 1759-1761 - 1993
Hasan Tashtoush, Reiner Sustmann
AbstractFree radicals generated from organic halides and (ethylenediamine)chromium(II) complexes in DMF are trapped by electron‐deficient olefins. The coupling reactions of alkyl halides, described in Part I[1], are extended and, in addition, aryl halides are shown to be efficient radical precursors to yield coupling products in good yield.
Purin aus Formamid. Methylierung und Bromierung des Purins (Synthesen in der Purinreihe, VII. Mitteil.)
Wiley - Tập 89 Số 1 - Trang 12-18 - 1956
Hellmut Bredereck, Hanno Ulmer, Hans Waldmann
Unmittelbare Cyanierung der Ferriciniumsalze
Wiley - Tập 93 Số 11 - Trang 2729-2735 - 1960
A. N. Nesmejanow, E. G. Perewalowa, L. P. Jurjewa
AbstractFerriciniumsalze lassen sich auch in saurem Medium nur mit geringer Ausbeute cyanieren, besser mit flüss. Blausäure in Tetrahydrofuran. Das Ferrocen‐carbon‐säurenitril entsteht aber in 80‐proz. Ausb., wenn man das Ferriciniumsalz durch Ferrocen und FeCl3 ersetzt. Bei der gleichen Reaktion mit Alkylferrocen tritt die CN‐Gruppe in den sub...... hiện toàn bộ
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