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| Section2 = | Section3 = }} 3,3′,3″-Phosphanetriyltris(benzenesulfonic acid) trisodium salt (abbreviated TPPTS when isolated and tppts as a ligand), is an organic compound that is also known as sodium triphenylphosphine trisulfonate. The compound has the formula P(C6H4SO3Na)3. This white microcrystalline solid is an unusual example of a water-soluble phosphine. Its complex with rhodium is used in the industrial production of butyraldehyde. ==Synthesis== Tppts is synthesized by sulfonation of triphenylphosphine. The sulfonation occurs at one meta-position of each of the three phenyl rings. The sulfonation agent is oleum, a solution of sulfur trioxide in sulfuric acid. The resulting trisulfonic acid is then treated with triisooctylamine and sodium hydroxide. Immediately upon dissolving in the reaction medium, the phosphine is protonated. It is the phosphonium salt that undergoes the sulfonation: :HP(C6H5)3+ + 3 SO3 → ()+ :()+ + 4 N(C8H17)3 → ()3() + ()+ :()3() + 3 NaOH → P(C6H4SO3Na)3 + 3 N(C8H17)3 + 3 H2O As a Lewis base, tppts is stronger than triphenylphosphine. 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「TPPTS」の詳細全文を読む スポンサード リンク
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