Org Biomol Chem
P. Poni Institute of Macromolecular Chemistry, 41A Gr. Ghica Voda Alley, 700487-Iasi, Romania.
Published: August 2010
Three imine macrocycles having rhomboidal shape were synthesized in good yields by [2+2] cyclocondensation reaction between equimolar quantities of (R,R)-1,2-diaminocyclohexane and 4,4'-bisformyl triphenylamine derivatives. The macrocycles structure was assigned by electrospray ionization mass spectrometry (ESI-MS), (1)H-NMR, and elemental analysis. UV, FTIR spectroscopy, and TG measurements were also used to characterize and prove the structure of these compounds. A conformational modification arising out of the rotation of triphenylamine group around the flexible cyclohexane-N bonds was observed in solution by (1)H-NMR and UV spectroscopy for all three macrocycles.
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http://dx.doi.org/10.1039/c004999a | DOI Listing |
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