π共役型ポリシクロブタベンゼン類の合成と構造

羽村 季之; 有沢 哲; 鈴木 啓介

doi:10.11494/kisoyuki.2008.0.307.0

19th Symposium on Fundamental Organic Chemistry

Session ID : A08

DOI https://doi.org/10.11494/kisoyuki.2008.0.307.0

Conference information

Host: Organizing Committee of Symposium on Fundamental Organic Chemistry

Co-host: The Chemical Society of Japan, The Kinki Chemical Society, Japan, Osaka University Global COE Program "Global Education and Research Center for Bio-Environmental Chemistry", The Society of Synthetic Organic Chemistry, Japan, The Pharmaceutical Society of Japan

Oral Presentation

Synthesis and Characterization of pi-extended Polycyclobutabenzenes

*TOSHIYUKI HAMURA, TETSU ARISAWA, KEISUKE SUZUKI

Author information

Keywords: methylenecyclobutabenzene, benzyne, dual cycloadition, ketene silyl acetal, X-ray analysis

CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract

Described herein is a synthesis of pi-extended polycyclobutabenzenes, a class of molecules of structural and theoretical interest. The preparation is based on the repeated 2+2 cycloadditions of benzyne and ketene silyl acetal (KSAs), followed by Peterson olefination of the resulting poly-ketone derivatives. By these steps, we were able to prepare various polymethylenecyclobutabenzenes. Structural study on these compounds showed properties related to the strained four-membered ring.

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