| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5227718 | Tetrahedron | 2009 | 6 Pages |
Abstract
Enamines were tested to be efficient nucleophiles for palladium-catalyzed asymmetric allylic alkylation, avoiding the use of unstablilized ketone enolates formed by strong bases. The influence of the chiral metallocene-based ligands upon this reaction was studied in detail. It was shown that planar chirality played an important role in enantioselectivities. Meanwhile, different kinds of enamines and allylic acetate to the reactions were also investigated. High catalytic activity and excellent enantioselectivity (up to 99% ee) were obtained with pyrrolidine enamines of both aliphatic and aromatic ketone.
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Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Xiaohu Zhao, Delong Liu, Fang Xie, Wanbin Zhang,