Write chemical reactions to show that open structure D-glucose contains the following:

(i) Straight chain

(ii) Five alcohol groups

(iii) Aldehyde as carbonyl group

 

 

 

 
 
 
 
 

Answers (1)

(i) Glucose reacts with HI to form n - hexane indicating that the six carbons are linked in straight chain.

(ii) Glucose gives pentacetate derivative on acetylation with acetic anhydride. This confirms the presence of five -OH groups.

(iii) 

This indicates that the carbonyl group is present as an aldehyde group.

 

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