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The reaction of arynes with enamines: A new ring expansion leading to benzocycloheptenone

✍ Scribed by D.J. Keyton; G.W. Griffin; M.E. Kuehne; C.E. Bayha

Book ID: 104239969
Publisher: Elsevier Science
Year: 1969
Tongue: French
Weight: 293 KB
Volume: 10
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(01)88643-3

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## Abstract For Abstract see ChemInform Abstract in Full Text.

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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.