which-step-is-crucial-in-the-formation-of-acetals-from-carbonyl-compounds-using-

Question

Which step is crucial in the formation of acetals from carbonyl compounds using a cyclic diol and acid?

Accepted Answer

Protonation of the carbonyl oxygen to increase electrophilicity.

Answer

Formation of a carbocation at the carbonyl carbon.

Answer

Reduction of the carbonyl group to an alcohol.

Answer

Deprotonation of the carbonyl carbon to form a carbanion.