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  • Chemistry  (1)
  • Wiley-Blackwell  (1)
  • 1990-1994
  • 1985-1989  (1)
  • 1980-1984
  • 1989  (1)
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  • Wiley-Blackwell  (1)
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  • 1990-1994
  • 1985-1989  (1)
  • 1980-1984
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  • 1
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Compounds of Germanium and Tin. 3. Sterically Congested Alkylarylstannanes by Transfer and Isomerization of 2,4,6-Tri-tert-butylphenyl GroupsReaction of SnBr4 and SnI4 with 2,4,6-tri-tert-butylphenyllithium (ArLi) by rearrangement of two Ar-groups gives the stannanes ArR2SnBr (3) and ArR2SnI (4), R = 2-methyl-2(3,5-di-tert-butylphenyl)propyl, which by a further transalkylation reaction with methyl lithium yield ArR2SnCH3 (5). However, treatment of 3 and 4 with tert-butyl lithium exclusively leads to ArR2SnH (6) which surprisingly is also obtained by reaction of ArRSnCl2 with tert-butyl lithium, presumably by an intermolecular R-group transfer. The structures of 5 and 6 were confirmed by X-ray crystallography.
    Notes: Umsetzung von SnBr4 und SnI4 mit 2,4,6-Tri-tert-butylphenyllithium (ArLi) liefert unter Umlagerung zweier Ar-Gruppen die Stannane ArR2SnBr (3) und ArR2SnI (4), R = 2-methyl-2(3,5-di-tert-butylphenyl)propyl, die mit Methyllithium unter nochmaliger Transalkylierung ArR2SnCH3 (5) ergeben. Dagegen bildet sich bei der Einwirkung von tert-Butyllithium auf 3 und 4 ausschließlich ArR2SnH (6), das überraschend auch bei der Reaktion dieses Lithiumorganyls mit ArRSnCl2 vermutlich durch intermolekulare R-Gruppenübertragung resultiert. Der Aufbau von 5 und 6 ist durch Röntgenstrukturanalysen gesichert.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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