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Torand Synthesis by Trimerization—New Receptors for Guanidinium
Author(s) -
Bell Thomas W.,
Liu Jia
Publication year - 1990
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199009231
Subject(s) - hydrogen bond , chemistry , derivative (finance) , guanidinium chloride , crystallography , guanidine , stereochemistry , molecule , biochemistry , organic chemistry , enzyme , financial economics , economics
The largest cycloarene derivative reported so far , the torand 1 , is surprisingly readily accessible by CsOH‐mediated cyclotrimerization. According to Macromodel calculations, 1 is almost planar and binds guanidinium with formation of six almost ideal hydrogen bonds with only slight change in conformation: the UV spectra of the torand and of its guanidinium complex are almost identical.