Question

Why glucose gives rxn with nh2oh but glucose pentaacetate does not gives?

Answer 1

Hey dear,

● Explaination -
- Glucose forms open structure in aqueous soln which contains aldehyde group at chain end.
- This aldehyde group reacts with NH4OH to form glucoxime.
Glucose + NH4OH ---> Glucose oxime

- On the other hand, glucose pentaaceta e being a cyclic structure even in aqueous form, does not have terminal carbonyl group. Therefore, it won't react with NH4OH.

Hope this helps you...