4-Dimethylaminocinnamaldehyde As a Photometric Reagent for Primary Aromatic Amines

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• 作者：C. Yu. Doronin ; R. K. Chernova and N. N. Gusakova
• 刊名：Journal of Analytical Chemistry
• 出版年：2004
• 出版时间：2004
• 年：2004
• 卷：59
• 期：4
• 页码：335-344
• 全文大小：80 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Analytical Chemistry
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1608-3199

文摘

The interaction of primary aromatic amines (PAAs) with 4-dimethylaminocinnamaldehyde (DMACA) is studied in various media by UV, IR, and 1H NMR spectroscopy. The optimum conditions for these reactions have been found, and the reasons for better analytical effects in the condensation reaction of PAAs with this reagent have been revealed. The physicochemical properties of the analytical form are studied using the aniline–DMACA model system as an example. A correlation has been found between the pH_opt of the reactions under study and the pK_a values of arylamines.