BENZIL-BENZILIC ACID REARRANGEMENT PDF

Learn about Benzilic Acid Rearrangement Mechanism with the Help of our Free Online is the rearrangement of benzil into 2-hydroxy-2, 2-diphenyl acetic acid. This is known as benzilic acid rearrangement. The mechanism of this benzilic acid rearrangement starts with attack of hydroxide on one of the carbonyl groups. Rearrangement of benzilic acid Prepared by: Aras jabar . to benzil and it is further transformed by benzilic acid rearrangement to benzilic acid.

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The rearrangement proceeds in neutral HTW without addition of base, but the yield of rearrangement products is nearly insensitive to pH at near-neutral conditions.

The selectivity to rearrangement products generally increased with pH at near-neutral and basic conditions whereas the selectivity to benzil decomposition products a competing thermal pathway exhibited a maximum at near-neutral conditions.

We conclude that the benzil rearrangement is catalyzed by acid, base, and water in HTW. The dominant mechanism shifts as the pH changes.

This system shows that mechanisms that are unimportant at conventional reaction conditions can become dominant in HTW. It also demonstrates the ability to use pH to direct the selectivity of a reaction in HTW.

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Benzilic Acid Rearrangement

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Rearrangements – Benzilic Acid

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