Why does the compound $(A)$ given below not form an oxime?
(N/A) The formation of an oxime requires a free carbonyl group (aldehyde or ketone) to react with hydroxylamine $(NH_2OH)$.
In the given structure,the glucose derivative is in its cyclic hemiacetal form where the anomeric carbon is involved in the ring structure.
Furthermore,the hydroxyl groups are acetylated $(OAc)$.
Since there is no free aldehyde or ketone group available in the cyclic structure,it cannot react with hydroxylamine to form an oxime.
In the given structure,the glucose derivative is in its cyclic hemiacetal form where the anomeric carbon is involved in the ring structure.
Furthermore,the hydroxyl groups are acetylated $(OAc)$.
Since there is no free aldehyde or ketone group available in the cyclic structure,it cannot react with hydroxylamine to form an oxime.
Explore More
Similar Questions
Lactose on hydrolysis gives
Easy
View SolutionDuring the curdling of milk,what happens to the sugar present in it?
Medium
View Solution$L$-isomer of a compound $A$ $(C_{4}H_{8}O_{4})$ gives a positive test with $[Ag(NH_{3})_{2}]^{+}$. Treatment of $A$ with acetic anhydride yields a triacetate derivative. Compound $A$ produces an optically active compound $B$ and an optically inactive compound $C$ on treatment with bromine water and $HNO_{3}$ respectively. Compound $A$ is ....
The number of stereoisomers of aldoheptose is $a$ and the number of stereoisomers of ketoheptose is $b$. The ratio of $a/b$ is:
Medium
View SolutionWhich of the following pentoses will be optically active?
$I$: $CHO-CH(OH)-CH(OH)-CH(OH)-CH_2OH$
$II$: $CHO-CH(OH)-CH(OH)-CH(OH)-CH_2OH$
$III$: $CHO-CH(OH)-CH(OH)-CH(OH)-CH_2OH$
$I$: $CHO-CH(OH)-CH(OH)-CH(OH)-CH_2OH$
$II$: $CHO-CH(OH)-CH(OH)-CH(OH)-CH_2OH$
$III$: $CHO-CH(OH)-CH(OH)-CH(OH)-CH_2OH$
Medium
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo