Etude du mécanisme de la formation de phosphates d'énols à partir de composés carbonyles &([a-z]+);-halogénés et de trialcoylphosphites

Abstract

Kinetic studies of the reactions of meta- and para- substituted ω-chloro- and ω-bromoacetophenones with various trialkylphosphites were done in order to elucidate the mechanism for the formation of the corresponding enols. Values were determined for the energies and entropies of activation as well as for the Hammett ρ constants. The mechanism of the reaction is discussed taking into account also the stereochemistry of the products obtained in the case of aldehydes and of variously substituted α-halogenated methylketones. [Journal translation]