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ChemInform Abstract: Influence of the Acetylenic Substituent on the Intramolecular Carbolithiation of Alkynes.

✍ Scribed by Anne-Lise Girard; Rudy Lhermet; Catherine Fressigne; Muriel Durandetti; Jacques Maddaluno

Book ID
115553039
Publisher
John Wiley and Sons
Year
2012
Weight
33 KB
Volume
43
Category
Article
ISSN
0931-7597

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ChemInform Abstract: (-)-Sparteine-Media
ChemInform Abstract: (-)-Sparteine-Mediated Stereoselective Intramolecular Carbolithiation of Alkynes.
✍ M. OESTREICH; R. FROEHLICH; D. HOPPE πŸ“‚ Article πŸ“… 2010 πŸ› John Wiley and Sons βš– 31 KB πŸ‘ 2 views

Sparteine-Mediated Stereoselective Intramolecular Carbolithiation of Alkynes. -Asymmetric deprotonation of the chiral 4-substituted 5-hexynyl carbamates (I) by sBuLi/(-)-sparteine and subsequent regioselective 5-exo-dig cyclization of the intermediate enantioenriched carbanionic pairs yields the fi