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Ring Lithiation and Functionalization of Imidazol-2-ylidene-boranes

✍ Scribed by Solovyev, Andrey; Lacôte, Emmanuel; Curran, Dennis P.


Book ID
120584134
Publisher
American Chemical Society
Year
2011
Tongue
English
Weight
849 KB
Volume
13
Category
Article
ISSN
1523-7060

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Borane-Substituted Imidazol-2-ylidenes:
✍ Andreas Wacker; Hans Pritzkow; Walter Siebert 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 663 KB

Reactions of the Lewis acids BH 3 and BEt 3 with trimethylimidazole (1) lead to the borane adducts 2a and 2b. Deprotonation of 2a with n-butyllithium results in the formation of the novel N-borane-substituted imidazol-2ylidene anion 3a -whereas deprotonated 2b rearranges unexpectedly to the anionic