question

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

 

 

 

 

 

 

 

 

(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.