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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
Enumerate the reactions of D-glucose which cannot be explained by its open chain structure.
Choose the appropriate answer(s) for the below representation from the options given
Which one of the following compounds is different from the rest?
Glucose does not react with ____________.
Glucose reacts with acetic anhydride to form ______.
Glucose is found to exist in two different α and β crystalline forms. These forms can be obtained by:
(i) The α form of glucose is obtained by crystallisation from a concentrated solution of glucose at 303 K.
(ii) The β form of glucose is obtained by crystallisation from a concentrated solution of glucose at 303 K.
(iii) The β form is obtained by crystallisation from hot and saturated aqueous solution at 371 K.
(iv) The α form is obtained by crystallisation from hot and saturated aqueous solution at 371 K.
The letter D and L in carbohydrates represent ____________.
Account for the following:
What happens when D – glucose is treated with the following reagents
Bromine water
Glucose with excess of phenyl hydrazine forms ______.
Give the reaction of glucose with hydrogen cyanide. Presence of which group is confirmed by this reaction?
