著者
Hideyuki Tukada Toshihiro Hiraki Hiroshi Nakamura
出版者
The Chemical Society of Japan
雑誌
Chemistry Letters (ISSN:03667022)
巻号頁・発行日
pp.130108, (Released:2013-05-18)
被引用文献数
3

[2]Rotaxanes constructed with an ethereal end-capped axle and a dibenzo-24-crown-8 wheel were synthesized from pseudorotaxanes bearing an alcoholic terminus and diaryl-diazomethanes using diphenyl phosphate as a catalyst. The reaction proceeded at room temperature in nonpolar solvents within several hours. The [2]rotaxanes thus obtained behaved as ammonium salts derived from a very strong base such as DBU. Thus, the amine form of the [2]rotaxane reacted with a weak acid, CO2–H2O, to give a bicarbonate salt of the [2]rotaxane, which turned back to the amine form after drying followed by evacuation.

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