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Unsaturated Macrocyclic Compounds. XXVIII. 1 1,2,7,8,13,14-Hexamethyltridehydro-[18]-annulene and 1,2,7,8,13,14-Hexamethyl-[18]annulene

✍ Scribed by Sondheimer, Franz.; Ben-Efraim, David A.

Book ID
118221819
Publisher
American Chemical Society
Year
1963
Tongue
English
Weight
793 KB
Volume
85
Category
Article
ISSN
0002-7863

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## Suppression of diatropicity of 1,8-bisdehydroil41 annulene by annelation with a benzene (1) was found to be larger than the case of fusion with a naphthalone nucleus (2). In view of the fact that annelation of 1,8-bisdehydro[l&]annulene with two naphthalene nuclei at the positions which make p