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Gold-Catalyzed Cyclization–Cycloaddition Cascade Reactions of Allenyl Acetals with Nitrones

✍ Scribed by Dr. Dhananjayan Vasu; Prof. Dr. Rai-Shung Liu


Book ID
115551626
Publisher
John Wiley and Sons
Year
2012
Tongue
English
Weight
329 KB
Volume
18
Category
Article
ISSN
0947-6539

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Asymmetric 13-dipolar cycloaddition of n
✍ Jean-Paul G. Seerden; Anita W.A. Schotte op Reimer; Hans W. Scheeren 📂 Article 📅 1994 🏛 Elsevier Science 🌐 French ⚖ 357 KB

## Asymmetric 1.3-dipolar cycioad@ion of n&ones with ketenc acetals is strongly catalyzed by chiral oxazaborolidines d&ived from N-tosyl-L-a-amino acids. The 5,5dialkoxyisoxuzolidines are obtained regioselectively in high yield wish high stereoselectivity and moderate enantioselectivity up to 62% ee