2a ~f 2b ist von groBem theoretischem Interesse'll. Bisher war nur der indirekte Nachweis des Diphenyl-['l und des Bis(dialkylamin~)-Derivats~~~ durch Abfangreaktionen gelungen. Wir berichten uber die blitzthermolytische Eneugung und Matrixisolierung von Cyclopropenyliden 2. Das Vorliegen von Cyclop
1,4,7,10-Tetraphenyldibenzo[a,e]cyclooctene-5,6,11,12-tetrone from 3,6-Diphenylphthalic Anhydride
✍ Scribed by Priv.-Doz. Dr. Theodor Troll; Dr. Georg W. Ollmann; Helga Leffler
- Publisher
- John Wiley and Sons
- Year
- 1984
- Tongue
- English
- Weight
- 212 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0044-8249
No coin nor oath required. For personal study only.
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We report the synthesis and structural characterization of the title compound (z), the first known derivative of the intriguing dibenz-annelated planar conjugated eight-membered ring system'. Unlike its parent compound, hydrocarbon 2 was found to be thermally stable, undergoing no detectable decompo
## Abstract Trimerization of butadiene in the presence of Ni(0) affords (1__E__,5__E__,9__E__)‐cyclododeca‐1,5,9‐triene **1** (__ttt__‐CDT), (1__E__,5__E__,9__Z__)‐cyclododeca‐1,5,9‐triene **2** (__ttc__‐CDT), and other isomers/oligomers. After optimization of reaction conditions, [^14^C~6~‐3,4,7,8
Swmary. The first known stable crystaZline derivative of 5,6-didehydrodibenzo[a,e]eycZooctene 111, namely, 1,4,7,lO-tetramethyZ-5,6-didehydrodibenzo[a,e]cycZooctene (21, was prepared and unequivocalZy characterised.
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