Intramolecular [2+ 2] Photocycloaddition. 5. Synthetic Methods toward [2. n]-,[3. n]-, and [4. n] Naphthalenophane Skeletons by Using α, ω-Bis (vinylnaphthyl) alkanes

J Nishimura, M Takeuchi, H Takahashi…

Index: Nishimura; Takeuchi; Takahashi; Ueda; Matsuda; Oku Bulletin of the Chemical Society of Japan, 1989 , vol. 62, # 10 p. 3161 - 3166

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Citation Number: 26

Abstract

[2+ 2] Photocycloaddition, cationic cyclocodimerization, and reductive ring enlargement were developed for the syntheses of [2. n]-,[3. n]-, and [4. n] naphthalenophanes, respectively, from α, ω-bis (vinylnaphthyl) alkanes as a single starting material. Using the exclusive syn selectivity of the former two methods, the room required for the intraannular naphthalene-ring rotation in the ring system is determined.