Phosphorylation of Ethyl Acetoacetate and Acetylacetone in the Conditions of Todd-Atherton Reaction

摘要

The keto-enol CH-acids are known to be phos-phorylated at the oxygen atom [1, 2]. The phosphorylation of dialkyl bromomalonates with triethylphosphite results in enolophosphates [1]. The latter were obtained also via the phosphorylation of tetraalkylammo-nium salts of p-diearbonyl compounds with diethyl chloro-thiophosphate under the phase-transfer catalysis [2].