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Ring-expansion of a dihalogenocarbene adduct of a cycloheptene derivative and the corresponding retro-reaction

โœ Scribed by Dashyant Dhanak; Reiko Kuroda; Colin B Reese

Book ID
108382751
Publisher
Elsevier Science
Year
1987
Tongue
French
Weight
177 KB
Volume
28
Category
Article
ISSN
0040-4039

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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.
โœ Ronald A. Wohl ๐Ÿ“‚ Article ๐Ÿ“… 1973 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 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.