Reactions of hexafluoroacetone dialkoxyphosphorylimines with NH-, PH-, and CHnucleophiles, trimethyl phosphite, and N,N-dimethylaniline, and [2+4]-eyeloaddition reaction have been studied. Previously, t-3 we developed convenient methods for the synthesis of hexafluoroaeetone alkoxycarbonylimines and studied their transformations in reactions with nucleophiles and in cyeloaddition reactions.In a continuation of our studies of the synthesis and reactivity of N-substituted hexafluoroacetone imines containing electron-withdrawing groups at the N atom, in the present work, we report on the synthesis and reactions of hexafluoroacetone dialkoxyphosphorylimines.O,O-Dialkyl N-hexafluoroisopropylidenephosp horamidates (2a,b) were synthesized by a method that differed from that described previously 4 and included preparation of chloro derivatives la,b and subsequent dehydrochlorination (Scheme i)
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