An Unprecedented Biradical Cyclization as an Alternative Pathway to the Myers-Saito Cycloaromatization in the Thermal Reactions of Enyne Allenes

An Unprecedented Biradical Cyclization as an Alternative Pathway to the Myers-Saito Cycloaromatization in the Thermal Reactions of Enyne Allenes

Tales of the Unexpected. The thermal reaction of aryl‐substituted enyne allenes 1 does not proceed by the expected Myers‐Saito cycloaromatization. Instead a novel cyclization via intermediate benzofulvene biradicals 2 takes place.

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Veröffentlicht in:Angewandte Chemie International Edition 1996-09, Vol.35 (16), p.1843-1845
Hauptverfasser: Schmittel, Michael, Strittmatter, Marc, Kiau, Susanne
Format: Artikel
Sprache:eng
Schlagworte:
cycloaromatizations
diradicals
enyne allenes
reaction mechanisms
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Beschreibung
Zusammenfassung:Tales of the Unexpected. The thermal reaction of aryl‐substituted enyne allenes 1 does not proceed by the expected Myers‐Saito cycloaromatization. Instead a novel cyclization via intermediate benzofulvene biradicals 2 takes place.
ISSN:0570-0833
1521-3773
DOI:10.1002/anie.199618431