5,10,15,20-四(4-羟基-3-磺酸苯基)卟啉的合成及其酸碱平衡的研究

Synthesis of 5,10,15,20-tetra(4-hydroxy-3-sulphophenyl)porphine and study of its acid-base equilibrium

讨论了5,10,15,20-四(4-羟基-3-磺酸苯基)卟啉的合成。元素分析、红外光谱和核磁共振证明了产物的结构。以光度法研究了试剂在水溶液中的酸碱平衡,测得 pK_(a_1)、pK_(a_2)、pK_(a_3) 和 pK_(a_4)分别为2.52、5.60、6.26和9.84。

Synthesis of 5,10,15,20-tetra(4-hydroxy-3sulphophenyl)porphine[T(4-HP)PS_4]and its acid-base equilibrium in aqueous solution havebeen studied.The ionization constants of T(4-HP)PS_4 were determined with spectrophotometricmethod.The pK_((?)_1),pK_((?)_2),pK_((?)_3) and pK_((?)_4) are2.52,5.60,6.26 and 9.84 respectively.