D-Allose is an aldohexose.Methylation of which hydroxyl group on $\beta$-D-allopyranose prevents the molecule from mutarotating to $\alpha$-D-allopyranose?
A)C1
B)C2
C)C3
D)C4
E)C5

Question

Quizplus · Accepted Answer

Methylation of the hydroxyl group at C1 prevents mutarotation because it blocks the formation of the hemiacetal/hemiketal necessary for interconversion between the alpha and beta anomers.

D-Allose Is an Aldohexose β\betaβ -D-Allopyranose Prevents the Molecule from Mutarotating To

D-Allose Is an Aldohexose $\beta$ -D-Allopyranose Prevents the Molecule from Mutarotating To