Axial structures of biphenyl compounds linked by diethyl ether chains

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• 作者：Yoshitane Imai ; Junichi Kitazawa ; Tomohiro Sato ; Nobuo Tajima ; Reiko Kuroda ; Yoshio Matsubara ; Zen-ichi Yoshida
• 关键词：Axial chirality ; Biphenyl ; Chiral transfer ; Crystal ; Diethyl ether chain
• 刊名：Tetrahedron
• 出版年：2007
• 期刊代码：107_00404020
• 类别：ch
• 出版时间：26 February 2007
• 卷：63
• 期：9
• 页码：1995-1999
• 文件大小：783 K

摘要

Two simple biphenyl compounds, I and II, linked by diethyl ether chains have been synthesized. These biphenyl compounds are able to respectively rotate about an internal axis. From X-ray analyses, it was found that the 2,2′-linked biphenyl compound I can transmit the same axial chirality of the biphenyl backbones through the diethyl ether chains. On the other hand, in the 3,3′-linked biphenyl compound II, the opposite axial chirality of the biphenyl backbones is transmitted.