Question

Establish the open chain structure of D-glucose including all necessary reactions.​

Answer 1

Answer:

The open-chain form is limited to about 0.25%, and furanose forms exist in negligible amounts. ... The ring arises from the open-chain form by an intramolecular nucleophilic addition reaction between the aldehyde group (at C-1) and either the C-4 or C-5 hydroxyl group, forming a hemiacetal linkage, −C(OH)H−O−.