Phosphinous acid amides phosphinic acids

In contrast to phosphonic acids, H-phosphinic acids can be coupled with alcohols using carbodiimides to give H-phosphinates 83 (Scheme 31, Table 12).[63-1231 These H-phosphinates 83 afford the corresponding phosphonic acids 84 directly by oxidation with NaI04[123l or by treatment with bis(trimethylsilyl)amide followed by carbon tetrachloride, triethylamine, and waterJ63 Alternatively, as described above (Section 10.10.2.1.3), H-phosphinates may also be converted into the phosphonochloridates by oxidation with carbon tetrachloride and then coupled to nucleophiles other than water, f63-75-76 ... 

CeH,),P [(CH,),NkP l(CH,m,PO Phosphinic acid amides Phenyl phosphorodi-(1-imidazolidate) Phosphazo compounds Trichlorophosphazo-sulfonyl compounds Phenylphosphonic dichloride (C,H,),PO... 

RN), PO,[(CH,),NhPO Phosphinic acid amides Phenyl phosphorodi-... 

Amidophosphonous acid esters Iminophosphites Phosphinic acid amides... 

Phosphinic acid amides from phosphinic acid chlorides... 

Phosphoramidates l(CH,),N], l(C, ) UP (RN),P0,1(CH,),NUP0 Phosphinic acid amides CflfiPOiNH,), Diethyl phosphoro-cyanidate... 

Potassium hydroxide Monoalkylation of amines s. 25, 330 via phosphinic acid amides cf. S.Coulton, G. A. Moore, and R.Ramage, Tetrah. Let. 1976, 4005... 

Phosphonitrilic chloride Phosphoric acid amides Phosphonic acid amides Phosphinic acid amides Tris(aziridinyl) phosphine oxide... 

G. Keglevich, N.Z. Kiss, T. Kortvelyesi, Microwave-assisted functionalization of phosphinic acids amidations versus esterifications. Heteroatom Chem. 24 (2013) 91-99. 

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