Rearrangements of Derivatives of Benzo[b
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Priv.-Doz. Dr. H. Hofmann; Dipl.-Chem. H. Westernacher
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Article
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1967
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John Wiley and Sons
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English
β 227 KB
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Whereas free BN radicals with unresolved ESR signals are formed on dehalogenation of pyridine-and 2-alkylpyridinedialkylchloroboranes by lithium in tetrahydrofuran 111 at 0 to 5"C, associated radicals ( I ) , whose ESR spectra show a hyperfine structure of ten lines (distances: 3.83 gauss), are obta