有机化学 ›› 1992, Vol. 12 ›› Issue (3): 264-268. 上一篇    下一篇

研究论文

弱碱K~2CO~3体系中酚酞盐的结构特征

金晓明;王佛松;刘克静   

  1. 中国科学院长春应用化学研究所
  • 发布日期:1992-06-25

The structure feature of phenbolphthalein salt formed in PP/K~2 CO~3/DMSO

JIN XIAOMING;WANG FUSONG;LIU KEJING   

  • Published:1992-06-25

用红外光谱、核磁共振谱鉴定了弱碱K~2Co~3体系和强碱KOH体系中制备的酚酞钾盐, 在弱碱K~2Co~3体系中, 酚酞成盐以完全内酯式结构为特性, 而在强碱KOH体系中,酚酞成盐主要是醌式结构。从而发现成盐反应中所使用的碱本身的性质是决定生成酚酞盐结构的关键因素。

关键词: 碳酸钾, 酚酞钾盐, 结构分析, 酚酞, 氢氧化钾

IR and NMR studies showed that phenolphthalein salts formed in the K2CO3-DMSO system existed as lactone-type structures while salts in the KOH-DMSO system existed predominantly as quinone-type structures. These structural features were useful in the explanation of the polymerisation mechanism of phenolphthalein in different systems.

Key words: POTASSIUM CARBONATE, STRUCTURAL ANALYSIS, POTASSIUM HYDROXIDE, PHENOLPHTHALEINUM

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