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A synthesis of a doubly-bridged [24] annulene

✍ Scribed by Koji Yamamoto; Mitsuo Shibutani; Shigeyasu Kuroda; Miko Ejiri; Jūro Ojima


Book ID
104218266
Publisher
Elsevier Science
Year
1986
Tongue
French
Weight
126 KB
Volume
27
Category
Article
ISSN
0040-4039

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Title annulenes were synthesized by Wittig reaction of cyclohepta-1,3,5-triene-1,6-dialdehyde or its vinylogous dialdehydes with 3-methylpenten-2-yn-4-yltriphenylphosphonium bromide, followed by intramolecular oxidative couplings of the resulting acyclic compounds, and they proved to be diatropic or