Question

where is the aldehyde group in ring structure of glucose? ​

Answer 1

Answer:

In Glucose, for example, both 5th and 6th Carbon atoms have -OH groups. But always, only the -OH group on (either 4th or) 5th Carbon atom attacks the Aldehyde group (1st C atom) to generate the ring structure. Why can not the -OH group on the 6th Carbon atom attack the Aldehyde group.

Answer 2

Answer:

Glucose, for example, both 5th and 6th Carbon atoms have -OH groups. But always, only the -OH group on (either 4th or) 5th Carbon atom attacks the Aldehyde group (1st C atom) to generate the ring structure.