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Medium Ring Ethers by Ring Expansion−Ring Contraction: Synthesis of Lauthisan

✍ Scribed by Coster, Mark J.; De Voss, James J.

Book ID
121411374
Publisher
American Chemical Society
Year
2002
Tongue
English
Weight
62 KB
Volume
4
Category
Article
ISSN
1523-7060

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The reaction of cyclic enol ethers with
The reaction of cyclic enol ethers with arenesulfonyl azides. A new ring contraction reaction. Ring expansion and ring contraction reactions by means of diazonium betaines. II.
✍ Ronald A. Wohl 📂 Article 📅 1973 🏛 Elsevier Science 🌐 French ⚖ 194 KB

We would like to report a new general ring contraction reaction according to the following scheme (eq. l(a),R = ArSO,): The enol ether la derived from a cyclic ketone is reacted with a suitable aside leading via an intermediate unstable 6'-triazoline & to the ring-contracted imidate ester 3a.