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Synthesis of the first 3,6,9,15,18,18-hexa-substituted-1,2,4,5,7,8,10,11,13,14,16,17-dodecadehydro[18]annulenes with D6h-symmetry

✍ Scribed by Yoshiyuki Kuwatani; Naoto Watanabe; Ikuo Ueda


Publisher
Elsevier Science
Year
1995
Tongue
French
Weight
190 KB
Volume
36
Category
Article
ISSN
0040-4039

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## Abstract The molecular structures of the title compounds 3 and 5 were investigated by NMR and X‐ray structural methods. The NMR results suggest two equivalent halves for both molecules. The X‐ray study shows an approximate mirror plane for 3 and an approximate twofold axis for a significant port