Dialkylamino-phenyldi- und -triphosphide aus dem (PhP)5-Abbau mit Alkaliamiden / Dialkylamino-phenyldi- and -triphosphides from the Degradation of (PhP)5 by Alkali Amides

Abstract

(PhP)5 and lithium dialkylamides in tetrahydrofuran form equilibrium mixtures of lithium aminophenylphosphides (PhP)nNR- with n = 3 and (mainly) 2. The monophosphides (n = 1) are not formed; it is concluded that they are generally unstable, decomposing to aminodiphosphides and cyclophosphines. Alkylation of an equilibrium mixture gives 1-alkyl-2-dialkylamino-diphenyl- diphosphines which, however, are thermally unstable. (PhP)5 degradation equilibria using differ­ent anionic nucleophiles are compared.