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प्रश्न
Write the reaction involved when D-glucose is treated with the following reagent:
(CH3CO)2O
Write the reaction when D-glucose reacts with the following:
Acetic anhydride
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उत्तर
\[\begin{array}{cc}
\phantom{.}\ce{CHO}\phantom{........................................}\ce{CHO}\phantom{...................}\\
|\phantom{...............................................}|\phantom{......................}\\
\phantom{.....................}\ce{(CHOH)4 + \underset{Acetic anhydride}{5(CH3CO)2O}->(CHOCOCH3)4 + 5CH3COOH}\\
|\phantom{...............................................}|\phantom{......................}\\
\phantom{...}\ce{\underset{\text{D-glucose}}{CH2OH}}\phantom{...................................}\ce{CH2O-C-CH3}\phantom{....}\\
\phantom{..................................................}||\\
\phantom{..................................................}\ce{\underset{\text{Glucose penta acetate}}{O}}
\end{array}\]
संबंधित प्रश्न
Write the reaction that indicates the presence of -CHO group in glucose
Which of the following statements is incorrect regarding glucose?
Which one of the following compounds is different from the rest?
Reduction of glucose by HI suggest that ____________.
Three structures are given below in which two glucose units are linked. Which of these linkages between glucose units are between C1 and C4 and which linkages are between C1 and C6?
| (I) |  |
| (II) |  |
| (III) |  |
Account for the following:
There are 5 OH groups in glucose
Account for the following:
What happens when D – glucose is treated with the following reagents
Bromine water
Consider the following reactions:
(i) \[\ce{Glucose + R-OH ->[Conc. HNO3] [A] ->[X eq of][(CH3CO)2O] Acetyl derivative}\]
(ii) \[\ce{Glucose ->[Ni/H2] [A] ->[Y eq of][(CH3CO)2O] Acetyl derivative}\]
(iii) \[\ce{Glucose ->[Z eq of][(CH3CO)2O] Acetyl derivative}\]
'X, 'Y' and 'Z' in these reactions are respectively:
When D-glucose reacts with HI, it forms ______.
Give a reason for the following observations:
Penta-acetate of glucose does not react with hydroxylamine.
