in-the-conversion-of-carbonyls-to-acetals-why-is-acid-necessary-for-full-acetal-

Question

In the conversion of carbonyls to acetals, why is acid necessary for full acetal formation?

Accepted Answer

Acid is required to protonate the carbonyl oxygen, increasing electrophilicity.

Answer

Acid prevents the formation of hemiacetals.

Answer

Acid increases the nucleophilicity of the diol.

Answer

Acid acts as a catalyst to stabilize the acetal through hydrogen bonding.