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|Section2= |Section3= }} Tributylammonium TRISPHAT is an organic salt with the formula ()+(). The anion features phosphorus(V) bonded to three tetrachlorocatecholate (C6Cl4O22−) ligands. This anion can be resolved into the enantiomers, which are optically stable (the picture shows the Δ enantiomer). The TRISPHAT anion has been used as a "chiral shift reagent" for cations. It improves the resolution of 1H NMR spectra by forming diastereomeric ion pairs. ==Preparation== The anion is prepared by treatment of phosphorus pentachloride with tetrachlorocatechol followed by a tertiary amine gives the anion: :PCl5 + 3 C6Cl4(OH)2 → H() + 5 HCl H() + Bu3N Bu3NH+ ()− Using a chiral amine, the anion can be readily resolved.〔F. Favarger, C. Goujon-Ginglinger, D. Monchaud, J. Lacour "Large-Scale Synthesis and Resolution of TRISPHAT (Phosphate(V) ) Anion" Journal of Organic Chemistry, 2004, volume 69, pp. 8521 -8524, 2004. .〕 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「TRISPHAT」の詳細全文を読む スポンサード リンク
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