Diammonium phosphite

Ammonium sulphide DIammonium phosphite Diammonium phosphate... 

Diamidophosphorous Acid, (NH2)2POH, was made, together with diammonium phosphite, by the action of ammonia on phosphorous oxide dissolved in ether or benzene —... 

Cupric phosphite, CuHP03,2H20.—A phosphite of this formula is obtained by the interaction of solutions of diammonium hydrogen phosphite and cupric chloride, or of phosphorous acid and cupric acetate.6 It is unstable, but admits of drying at a medium temperature. 

Earlier, Cava and co-workers had shown that EDOT 43 reacts with formaldehyde and dimethylamine to give the Mannich base 45 in 84% yield <1999T11745>. Subsequently, Cava and co-workers have converted the Mannich base 45 in two steps to the synthetically useful phosphonium salt 46. In an extension of this method, the diammonium salt 47 obtained from bis-EDOT has been treated with diethyl phosphite to give the bis-phosphonate 48 <2005T3045>. 

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