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New chiral ligands for the asymmetric copper catalyzed conjugate addition of Grignard reagents to enones

✍ Scribed by Eric L. Stangeland; Tarek Sammakia

Publisher
Elsevier Science
Year
1997
Tongue
French
Weight
468 KB
Volume
53
Category
Article
ISSN
0040-4020

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✦ Synopsis

The copper catalyzed conjugate addition of n-butyl Grignard to enones in the presence of chiral ferrocenyl phosphine oxazoline ligands has been studied and found to provide useful levels of asymmetric induction. A comparison of the ferrocene derived ligands 3 and 6 with the corresponding phenyl derived ligands 8 and 9 reveals that the ferrocene template plays an essential role in the reaction.

πŸ“œ SIMILAR VOLUMES

Chiral diselenide ligands for the asymme
Chiral diselenide ligands for the asymmetric copper-catalyzed conjugate addition of Grignard reagents to enones
✍ Antonio L Braga; Sandra J.N Silva; Diogo S LΓΌdtke; Roberta L Drekener; Claudio C πŸ“‚ Article πŸ“… 2002 πŸ› Elsevier Science 🌐 French βš– 159 KB

The copper-catalyzed conjugate addition of Grignard reagents to enones in the presence of chiral diselenide oxazoline ligands has been studied and found to provide good yields and useful levels of asymmetric induction.

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