The reaction of <Emphasis Type="Italic">N</Emphasis>-sulfinyltrifluoromethanesulfonamide with triethylphosphate and triethylphosphite |
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| Authors: | L L Tolstikova A V Bel’skikh B A Shainyan |
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| Institution: | 1.Favorskii Irkutsk Institute of Chemistry, Siberian Branch,Russian Academy of Sciences,Irkutsk,Russia |
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| Abstract: | The reaction of N-sulfinyltrifluoromethanesulfonamide CF3SO2NSO with triethylphosphate and triethylphosphite results in N-(trifluoromethanesulfonyl)triethoxyphosphazene CF3SO2N=P(OEt)3, which upon heating is converted into the diethyl ester of N-trifluoromethylsulfonylamidophosphoric acid CF3SO2NHP(O)·(OEt)2. The latter was also prepared by alcoholysis of N-(trifluoromethanesulfonyl)trichlorophosphazene or of potassium salt of dichloroanhydride of N-trifluoromethylsulfonylamidophosphoric acid, or by the reaction of the salt CF3SO2NHNa with diethylchlorophosphate. Compound CF3SO2N=P(OEt)3 does not rearrange into the isomeric diethyl ester of N-ethyl-N-(trifluoromethylsulfonyl)amidophosphoric acid CF3SO2N(Et)P(O)(OEt)2, contrary to the statement in the literature on the easy rearrangement of phosphazenes RFSO2N=P(OEt)3 into amidates RFSO2N(Et)P(O)(OEt)2. |
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