Question

Among the following, the conformation that corresponds to the most stable conformation of meso-butane-$2,3$-diol is:

• A.
• B.
• C.
• D.

Answer 1

The correct option is B

In option $\left(b\right)$, given configuration represents meso-butane-$2,3$-diol and due to intramolecular hydrogen bonding, the gauche form is more stable.
Option (c) and (d) does not represent meso-isomer.