Question

Draw the products of the complete hydrolysis of a ketal. draw all products of the reaction.

Answer 1

The main products obtained from complete hydrolysis of a ketal are ketone (90%) and hydrate (10%), we also obtained as byproducts two alcohols (R
`_(1)`OH and R
`_(2)`OH). See attached image

Step-by-step explanation:

To understand this question, one has to know what a ketal is and also what is complete hydrolysis.

Ketal: functional group present in organic chemistry that has a central carbon attached to 2 R groups and 2 OR.

Hydrolysis: reaction of water with a molecule

We can observe in the diagram that this reaction is found in equilibrium, meaning that depending on the concentration of the diverse substrates and products, the reaction will favor the direction towards one or the other.

Note: In the last part of the reaction we can observe that the equilibrium favors the production of ketone over that of a hydrate. This occurs since a ketone is more stable than that of a hydrate (about 90% will be ketone while 10% will be a hydrate).

Answer 2

Following reaction shows the complete hydrolysis of ketal. The products formed are 1) Diol and 2) Ketone. Mechanism is shown below,