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Ring Expansions and Contractions with Diazonium Betaines. I. Synthesis of Ketones by Ring Expansion of Methylenecycloalkanes with Arenesulfonyl Azides

✍ Scribed by Wohl, Ronald

Book ID: 127057755
Publisher: American Chemical Society
Year: 1973
Tongue: English
Weight: 392 KB
Volume: 38
Category: Article
ISSN: 0022-3263
DOI: 10.1021/jo00962a600

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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.

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