An Unprecedented Biradical Cyclization as an Alternative Pathway to the Myers–Saito Cycloaromatization in the Thermal Reactions of Enyne Allenes†‡
Corresponding Author
Prof. Dr. Michael Schmittel
Institut für Organische Chemie der Universität, Am Hubland, D-97074 Würzburg (Germany) Fax: Int. code +(931) 888-4606 e-mail: [email protected]
Institut für Organische Chemie der Universität, Am Hubland, D-97074 Würzburg (Germany) Fax: Int. code +(931) 888-4606 e-mail: [email protected]Search for more papers by this authorDipl.-Chem. Marc Strittmatter
Institut für Organische Chemie der Universität, Am Hubland, D-97074 Würzburg (Germany) Fax: Int. code +(931) 888-4606 e-mail: [email protected]
Search for more papers by this authorDipl.-Chem. Susanne Kiau
Institut für Organische Chemie der Universität, Am Hubland, D-97074 Würzburg (Germany) Fax: Int. code +(931) 888-4606 e-mail: [email protected]
Search for more papers by this authorCorresponding Author
Prof. Dr. Michael Schmittel
Institut für Organische Chemie der Universität, Am Hubland, D-97074 Würzburg (Germany) Fax: Int. code +(931) 888-4606 e-mail: [email protected]
Institut für Organische Chemie der Universität, Am Hubland, D-97074 Würzburg (Germany) Fax: Int. code +(931) 888-4606 e-mail: [email protected]Search for more papers by this authorDipl.-Chem. Marc Strittmatter
Institut für Organische Chemie der Universität, Am Hubland, D-97074 Würzburg (Germany) Fax: Int. code +(931) 888-4606 e-mail: [email protected]
Search for more papers by this authorDipl.-Chem. Susanne Kiau
Institut für Organische Chemie der Universität, Am Hubland, D-97074 Würzburg (Germany) Fax: Int. code +(931) 888-4606 e-mail: [email protected]
Search for more papers by this authorThermal and Electron Transfer Induced Reactions of Enediynes and Enyne Allenes, Part 4. Financial support from the Volkswagen-Stiftung and the Fonds der Chemischen Industrie is gratefully acknowledged. We thank Prof. Dr. C. Rüchardt and E. Hickl (Freiburg) for their kind help with the DSC experiments. Part 3: [6].
Dedicated to Professor Horst Prinzbach on the occasion of his 65th birthday
Graphical Abstract
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.
References
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