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- W2013021831 abstract "Ausgehend von 12 wird in vielstufiger Synthese das konformativ starre Diol 4 gewonnen. Die bei der Reduktion des aus 4 mit H2SO4 gebildeten Kations 7 mit VCl2 entstehenden Radikale vom Typ 1 sind unter den üblichen Bedingungen nicht faßbar. Kationen vom Typ 7 und 11 werden UV- und NMR-spektroskopisch untersucht und mit den entsprechenden Spektren des Tritolylmethyl-Kations verglichen. Die fixierte Propeller-Stereochemie der Kationen wird der von 3–6, 8–10 und der der konformativ beweglichen Sulfide 17 und 18 gegenübergestellt. Triple Clamped Triphenylmethyl Radicals and Cations Starting with 12, the diol 4 is obtained in a many-step synthesis. Reduction of 7, prepared from 4 with H2SO4, with VCl2 gives rise to the formation of radicals of type 1, which exhibit low stability in solution. Cations of the type 7, 11 are investigated by UV and NMR spectroscopy and compared with the corresponding data of the tritolylmethyl cation. The fixed propeller-type stereochemistry of the cations is also compared with that of 3–6, 8–10 and that of the conformationally mobile sulfides 17 and 18." @default.
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- W2013021831 date "1982-02-01" @default.
- W2013021831 modified "2023-09-26" @default.
- W2013021831 title "Dreifach verklammerte Triphenylmethyl-Radikale und -Kationen" @default.
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- W2013021831 doi "https://doi.org/10.1002/cber.19821150204" @default.
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