Concept explainers
Interpretation:
The mechanism is to be written for the conversion of pentenyl glycosides to glycosyl bromides
with bromine. The reason for the alpha anomer is formed selectively is to be explained.
Concept introduction:
The
In pyranose, the carbocation formed at anomeric carbon stabilized by delocalization of pi electrons on oxygen is called aoxygen-stabilized carbocation.
The gauche conformation for structural units of the type
When the electronegative substituent at the anomeric carbon is axial, the lone pair on oxygen is stabilized by delocalization.
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