Cryptands and bismacrocycles with cyanuric and isocyanuric units: synthesis and structural investigations
作者:Flavia Pop、Crina Socaci、Anamaria Terec、Eric Condamine、Richard Attila Varga、Ciprian I. Raţ、Jean Roncali、Ion Grosu
DOI:10.1016/j.tet.2012.07.100
日期:2012.10
Hay synthesis of cryptands and bismacrocycles starting from tripodands with cyanuric and isocyanuric cores is reported. The structure of the compounds is revealed by X-ray diffraction, NMR spectrometry and MS investigations. DNMR experiments carried out with bismacrocycles indicated the flipping of the rings and the free-energy barrier for the conformational process could be determined in one case. (C) 2012 Elsevier Ltd. All rights reserved.