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why is that sucrose is a non reducing suger

megarushan
in Organic Chemistry

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sucrose.png


sucrose doesn't have free anomeric c .it is ok..but it have hydroxyl group..why is that hydroxyl group can't oxidize..

recall that reducing sugars have free aldehyde/ketone groups which can be oxidized to carboxylic acids.

 

http://en.wikipedia.org/wiki/Reducing_sugar

 

the reverse doesn't happen because opening the ring isn't stable and there is no hydroxyl on the anomeric carbon.

Edited by andrewcellini

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