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ChemInform Abstract: 8,19-Dimethyl-tetraepoxy[22]annulene(2.1.2.1): The First Tetraepoxy-Bridged Aromatic[22]annulene.

✍ Scribed by G. MAERKL; R. EHRL; P. KREITMEIER; T. BURGEMEISTER

Publisher
John Wiley and Sons
Year
2010
Weight
26 KB
Volume
29
Category
Article
ISSN
0931-7597

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8,19-Dimethyl-tetraepoxy[22]annulen(2.1.
8,19-Dimethyl-tetraepoxy[22]annulen(2.1.2.1): ein erstes Tetraepoxy-Verbrücktes aromatisches [22]Annulen
✍ Gottfried Märkl; Robert Ehrl; Peter Kreitmeier; Thomas Burgemeister 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 German ⚖ 802 KB

McMurry reaction of 5,5'-ethylidenebis[furan-2-carbaldehyde] (15), a synlanti mixture 16 of (E,E)-and (Z,Z)-8,19-dihydro-8,19-dimethyl-tetraepoxy[22]annulene is obtained. The (E/E)-isomers 16 are the first rotationally active noncyclic conjugated macrocycles, where the (4)-ethenediyl moieties rotate

ChemInform Abstract: Macrocyclic [4n + 2
ChemInform Abstract: Macrocyclic [4n + 2]-Hueckel Aromatic Systems up to n = 9 and [4n] Antiaromatic Systems up to n = 10: Homologous Sequences from Tetraepoxy[24]annulene(2.0.2.0) to Tetraepoxy[40]annulene(12.0.12.0) and from the “Tetraoxa[22]porphyrin(2.0.2.0)-” to the “Tetraoxa[38]porphyrin(12.0.12.0)”-Dication.
✍ G. MAERKL; T. KNOTT; P. KREITMEIER; T. BURGEMEISTER; F. KASTNER 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 27 KB 👁 1 views