Alternative General Synthetic Routes to [2.2] Cyclophanes and [3.2] Cyclophanes from [3.3] Cyclophane??2, 11??diones by Photodecarbonylation, and a Structural …

…, H Tatemitsu, T Inazu, T Shinmyozu

Index: Isaji, Hajime; Yasutake, Mikio; Takemura, Hiroyuki; Sako, Katsuya; Tatemitsu, Hitoshi; Inazu, Takahiko; Shinmyozu, Teruo European Journal of Organic Chemistry, 2001 , # 13 p. 2487 - 2499

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Citation Number: 8

Abstract

Abstract Photodecarbonylation of [3.3] cyclophane-2, 11-diones, which are readily prepared by TosMIC coupling, affords [2.2] cyclophanes in high yield. This method also provides a general synthetic method for [3.2] cyclophan-2-ones by taking advantage of the fact that this photochemical reaction proceeds in a stepwise manner through [3.2] cyclophan-2-ones. A series of [2.2] cyclophanes,[3.2] cyclophanes, and [3.3] cyclophanes can thus be made ...

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