Journal of Physical Chemistry B, Vol.113, No.26, 9035-9040, 2009
Striking Structural Transformation from Cyclic Oligosaccharide to Aromatic Series by Means of the Effect of Lithium Carbonate Based on Gas Chromatography Coupled to Time-of-Flight Mass Spectrometry
An interesting paradigm in which the conformation of glcopyranose of beta-CD in the presence of Li2CO3 is transformed into both,in aromatic structure, such as the heterocyclic Compound C6H6O+ with a prominent relative abundance (RA) and the tropylium ions C3H3+ C5H5+, and C7H7+ at comparatively low temperatures, and a linear structure Such as C18H30O+ and C4H10O3+ is reported in the present work. The efficient transformation (higher RA, lower temperature) from a Sugar Structure to an aromatic Structure is ascribed to the contribution of the molecule-ion interaction between beta-CD and Li2CO3. Such a transformation is significant because it provides new insight into the link between supramolecular chemistry and other fields Such as organic synthesis, biomineralization, environmental protection, and energy utilization.