ISSN:
0030-493X
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Glycosidic oxocarbenium ions A1+ were formed by isobutane chemical ionization from methyl 2,3,4,6-tetra-O-methyl-β-D-mannopyranoside, methyl 2,3,4,6-tetra-0-methyl-β-D-galactopyranoside and methyl 2,3,4,6-tetra-O-methyl-β-D-glucopyranoside (the ring - O-being converted into — O = ), and then- reaction with ammonia was studied by Fourier transform ion cyclotron resonance Spectrometry. Very slow formation (reaction efficiency 0.6-1.4%) of the adduct ion [A1 + NH3]4 was observed as the main process for carefully thermalized ions A1+. Interestingly, the efficiency of the adduct ion formation depends on the sterochemistry of ions A1+.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/oms.1210261210
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