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प्रश्न
What happens when D-glucose is treated with the following reagent?
HI
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उत्तर
When D-glucose is heated with HI for a long time, n-hexane is formed.
\[\begin{array}{cc}
\ce{CHO}\phantom{...............................................}\\
|\phantom{..................................................}\\
\ce{(CHOH)4 ->[HI][\Delta] \underset{n-hexane}{CH3 - CH2 - CH2 - CH2 - CH2 - CH3}}\\
|\phantom{..................................................}\\
\ce{\underset{{D-glucose}}{CH2OH}}\phantom{..........................................}
\end{array}\]
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संबंधित प्रश्न
How many moles of acetic anhydride will be required to form glucose pentaacetate from 2M of glucose?
(a) 2
(b) 5
(c) 10
(d) 2.5
Enumerate the reactions of D-glucose which cannot be explained by its open chain structure.
Write the reactions involved when D-glucose is treated with the following reagent:
H2N-OH
Write the reaction involved when D-glucose is treated with the following reagent:
(CH3CO)2O
The following compound can be called as:
The number of asymmetric carbon atom(s) below the figure is/are
What is the most abundant organic compound on earth?
Oxime is formed by treating glucose with ____________.
Glucose does not give Schiff’s test because of the formation of cyclic ____________.
Reduction of glucose by HI suggest that ____________.
Which of the following reactions of glucose can be explained only by its cyclic structure?
The α-D glucose and β-D glucose differ from each other due to difference in carbon atom with respect to its ____________.
The letter D and L in carbohydrates represent ____________.
Which of the following pairs represents anomers?
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) |  |
Assertion: D (+) – Glucose is dextrorotatory in nature.
Reason: ‘D’ represents its dextrorotatory nature.
Write the reactions of D-glucose which can’t be explained by its open-chain structure. How can cyclic structure of glucose explain these reactions?
Match List - I with List - II.
| List I | List II | ||
| (A) | Glucose + HI | (I) | Gluconic acid |
| (B) | Glucose + Br2 water | (II) | Glucose pentacetate |
| (C) | Glucose + acetic anhydride | (III) | Saccharic acid |
| (D) | Glucose + HNO3 | (IV) | Hexane |
Choose the correct answer from the options given below:
When D-glucose reacts with HI, it forms ______.
