Direct Carbon−Carbon Bond Formation via Soft Enolization: A Facile and Efficient Synthesis of 1,3-Diketones

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Abstract

Ketones undergo soft enolate formation and acylation on treatment with MgBr(2).OEt(2), i-Pr(2)NEt, and various acylating agents to give 1,3-diketones. The process is particularly efficient for N-acylbenzotriazoles and O-Pfp esters, and, in these cases, is conducted with untreated, reagent-grade CH(2)Cl(2) open to the air, thus providing an exceptionally simple approach to the synthesis of this important class of compounds.

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