The Stabilization of Lithiated Organic C
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Jens Atzrodt; Rainer Beckert; Michael Bräuer; Karsten Nordhoff; Ernst Anders; He
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Article
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1998
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John Wiley and Sons
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English
⚖ 216 KB
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The deprotonation of the 4H-imidazoles 1 by lithium hydride Alkylation, as well as acylation, of 2 leads to the exocyclic substituted derivatives 3 and 5. The NMR spectra of 3 and 5 yields the lithiated derivatives 2 which contain a stable delocalized anion. Surprisingly, the X-ray crystal structure