[megarushan]

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

[kriggy]

Because it cant be easily reduced. If you reduce OH group, then you are left with CH3. THis reaction is not that easy

[megarushan]

Because it cant be easily reduced. If you reduce OH group, then you are left with CH3. THis reaction is not that easy

yes it can't be easily reduce , but i think it can be easily oxidize to carboxyl group...
my question is why sucrose (hydroxyl group) cant be oxidize by benedict reagent..

[Babcock_Hall]

@OP, Your first post mentioned something about the anomeric position, which is worth keeping in mind.  Let's do this step-by-step.  What functional groups are oxidized in typical monosaccharides, such as glucose or fructose?  Hydroxyl groups do not oxidize under these conditions (or sucrose would react).

@Kriggy, It is because sucrose cannot be easily oxidized, but other sugars can be.