The Baker-Venkataraman rearrangement transforms aromatic ortho-acyloxyketones to beta-diketones by basic treatment (catalysis). Beta-diketones are of great interest in the synthesis of chromones, flavones and coumarins. The most commonly used bases in the reaction are: KOH, potassium tert-butoxide, sodium in toluene, potassium hydride.

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The reaction mechanism begins with the subtraction of alpha hydrogen from the ketone, forming an enolate that attacks the carbonyl of the acyloxy group, giving rise to the formation of a cyclic intermediate that yields the beta diketone after final cleavage.

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