Tokunaga Y, Hayakawa K, Miyashita J, Kawasaki T, Miyagawa S. Formation of pseudo[3]rotaxanes containing calix-bis-crowns and secondary ammonium ions and their thermodynamic stabilities in a solution: preorganization by second macrocycle and nonallosteric behavior exhibited by large crown cavities.
Tetrahedron Lett 2013. [DOI:
10.1016/j.tetlet.2013.10.015]
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