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Fourfold [2]Rotaxanes of Calix[4]arenes by Ring Closure
Author(s) -
Molokanova Olena,
Vysotsky Myroslav O.,
Cao Yudong,
Thondorf Iris,
Böhmer Volker
Publication year - 2006
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200602166
Subject(s) - rotaxane , calixarene , ring (chemistry) , metathesis , chemistry , catenane , polymer chemistry , closure (psychology) , stereochemistry , crystallography , supramolecular chemistry , crystal structure , molecule , organic chemistry , polymerization , polymer , economics , market economy
Capsular heterodimers are formed exclusively from a tetra(tosylurea)calix[4]arene (blue) and tetrakis(3,5‐dibutenyloxyphenylurea)‐ or tetrakis(dipentenyloxyphenylurea)calix[4]arenes (red). Metathesis between the prearranged alkenyl groups and subsequent hydrogenation leads to mechanically interlocked capsules which can neither dissociate nor release the included guest(s) owing to their fourfold [2]rotaxane structure.