Synthesis of Pyridinium – indan-1,3-dion-2-ide Betaine Dyes and Use as Indicators of Carboxylic Acids’ Polarity
作者:Piotr Milart
DOI:10.3184/030823408x324698
日期:2008.6
2-[4-(2,4,6-Triarylpyridinium-1-yl)phenyl]indan-1,3-dion-2-ides 5a–d, (N+C-) betaine dyes, were synthesised by reaction of 2,4,6-triarylpyrylium perchlorates 6a–d with 2-(4-aminophenyl)indan-1,3-dione 7. The solvatochromic effect of compounds 5 was investigated. The betaines obtained are suitable for polarity determination of carboxylic acids and their anhydrides.
2-[4-(2,4,6-Triarylpyridinium-1-yl)phenyl]indan-1,3-dion-2-ides 5a–d, (N+C-) 甜菜碱染料,由 2 ,4,6-三芳基吡喃高氯酸盐 6a-d 与 2-(4-氨基苯基)indan-1,3-二酮 7。研究了化合物 5 的溶剂化变色效应。所得甜菜碱适用于羧酸及其酸酐的极性测定。