Synthese de Quelques α-Cetophosphonates Comportant des Hydrogenes Mobiles en Position α: Caracteristiques Spectroscopiques IR, RMN 1 H, 13 C, 31 P et Reactivites vis-a-vis des Amines et des Derivees de L'hydrazine

Abstract

In the present work we describe the keto-enol equilibrium of some acylphosphonates 1 by means of 1 H, 13 C, 31 P NMR, and IR data which show that the enol form has E configuration. The keto/enol ratio is determined on the basis of 31 P NMR data. The reactivity of 1 with hydrazines derivatives and primary amines are reported. The structure of all compounds is determined by 1 H, 13 C, 31 P NMR, and IR.