Question
Question: Two hexoses form the same osazone find the correct statement about these hexoses....
Two hexoses form the same osazone find the correct statement about these hexoses.
A
Both of them must be aldoses
B
They are epimers at C-3
C
The carbon atoms 1 and 2 in both have the same
configuration
D
The carbon atoms 3, 4 and 5 in both have the same
configuration
Answer
The carbon atoms 3, 4 and 5 in both have the same
configuration
Explanation
Solution
In the formation of osazone C–1 and C–2 react with phenyl hydrazine to form phenyl hydrazone. If C–3, C–4, C–5 have same configuration the carbohydrates will form same osazone even if they differ in configuration at C–1 or C–2.