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The 16-electron electrocyclisation of vinylogous heptafulvalene |
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| Authors: | Horst Bingmann Lothar Knothe Dieter Hunkler Horst Prinzbach |
| Affiliation: | Chemisches Laboratorium der Universität, 78 Freiburg, BRD |
| Abstract: | The vinylogous heptafulvalene (“heptafulvadiene”) (5) cleanly undergoes the antarafacial 16-electron electrocyclisation to (11) upon thermal activation (benzene, Ea = 22.1 kcal/mol; log A = 10.8). |
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