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Chemoselectivity in the Pd-Catalyzed Cyclization of 1,6-Enynes and Proof of the Relative Configuration of the New Stereogenic Centers

✍ Scribed by Barry M. Trost; A. Stephen K. Hashmi; Richard G. Ball

Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
125 KB
Volume
343
Category
Article
ISSN
1615-4150

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Pd(0)-Catalyzed Bismetallative Cyclizati
Pd(0)-Catalyzed Bismetallative Cyclization of Enynes in the Presence of Bu3SnSiMe3 Using N-Heterocyclic Carbene as a Ligand
✍ Yoshihiro Sato; Noriko Imakuni; Miwako Mori 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 104 KB

## Abstract It was found that a nucleophilic __N__‐heterocyclic carbene could be utilized as a ligand for Pd(0)‐catalyzed bismetallative cyclization of enynes in the presence of Bu~3~SnSiMe~3~. An imidazolium salt having a bulky alkyl group attached to both nitrogen atoms of its imidazol‐2‐ylidene