CBr 4 Promoted Α‐acyloxyation of Β‐keto Esters and Β‐diketones by Sodium Carboxylates

CBr4 promoted C-O coupling of beta-keto esters and beta-diketones with sodium carboxylates has been developed. This mild and operationally simple methodology, using sodium carboxylates as acyloxyation source and deacid reagent, provides an efficient pathway for the acquisition of prospective alpha-acyloxylated ketones.