Fourfold Diels–Alder Reaction of Tetraethynylsilane |
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| Authors: | Florian L Geyer Alexander Rode Prof Uwe H F Bunz |
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| Affiliation: | Organisch‐Chemisches Institut, Ruprecht‐Karls‐Universit?t Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg (Germany), Fax: (+49)?6221‐54‐8401 |
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| Abstract: | A series of ethynylated silanes, including tetraethynylsilane, was treated with tetraphenylcyclopentadienone at 300 °C under microwave irradiation to give the aromatized Diels–Alder adducts as sterically encumbered mini‐dendrimers with up to 20 benzene rings. The sterically most congested adducts display red‐shifted emission through intramolecular π–π interactions in the excited state. |
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| Keywords: | dendrimer Diels– Alder reaction ethynyl oligophenyl silane |
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