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Chapter 20: Q20P. (page 1067)

Question: Propose a mechanism for conversion of the dianion to the ketone under mildly acidic conditions.

Short Answer

Expert verified

The mechanism for converting dianion to ketone is as follows:

Step by step solution

01

Dianion to ketone conversion

A dianion compound with two negative charges, when treated under mildly acidic conditions, converts into a hydrate of the ketone.A ketone is formed when water is cleaved from a hydrate of the ketone.

02

Conversion of dianion to ketone

A ketone hydrate is formed on treating dianion with two equivalents of acids. Again when treated with acid, water is removed, and a secondary cation is formed. On treating this secondary cation with water, a ketone product is formed.

Mechanism for the conversion of dianion to ketone

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5.

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