Hetera-p-carbophane. VIII. The change in binding sites of NMR shift reagents in polyoxadioxo[n]paracyclophanes and their open-chain analogs.

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概要

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• A series of polyoxadioxo[<I>n</I>]paracyclophanes were prepared by condensation of polyethylene glycols with the corresponding 2,5-disubstituted <I>p</I>-phenylenediacetyl dichlorides under high dilution conditions. <SUP>1</SUP>H NMR spectra of these compounds were recorded in the presence and absence of lanthanoid shift reagents and the results are compared with those of the open-chain analogs. The change in binding sites of the shift reagents is observed as the number of ethylenedioxy units increases, and the result is discussed from the standpoint of electronic and steric effects.

• 公益社団法人 日本化学会の論文

著者

• Oki Michinori

  Department Of Chemistry Faculty Of Science Okawama University Of Science

• Sakamoto Kazuhiko

  Department Of Applied Chemistry Faculty Of Engineering Saitama Universtiy

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