From Chemistry Towards Technology Step-By-Step From Chemistry Towards Technology Step-By-Step От химии к технологии шаг за шагом 2782-1900 84625 10.52957/2782-1900-2024-5-2-147-151 Научные статьи Scientific articles Научные статьи Synthesis and analysis of (2z)-4-(4-methylanilino)-4-oxobut-2-enoic acid Synthesis and analysis of (2z)-4-(4-methylanilino)-4-oxobut-2-enoic acid Юсифова Юлия Руслановна Yusifova Yulia Ruslanovna yuyusifova@yandex.ru Горячева Ольга Сергеевна Gorjacheva Olga Sergeevna goryachevaos@ystu.ru

кандидат химических наук;

candidate of chemical sciences;

 Ярославский государственный технический университет Yaroslavl State Technical University 24 06 2024 24 06 2024 5 2 147 151 13 05 2024 22 05 2024 https://chemintech.ru/en/nauka/article/84625/view

The paper identified the structure of synthesised maleic acid monoamide by physical methods of analysis. The authors have determined the solubility of maleic acid monoamide in organic solvents with different properties and dielectric constant values. The paper describes the solvent ratio allowing the analysis with the best metrological properties. The reaction between p-toluidine and maleic anhydride to form (2z)-4-(methylanilino)-4-oxobut-2-enoic acid proceeds with high yield; mass fraction of the main substance is 94.23±0.69 %.

The paper identified the structure of synthesised maleic acid monoamide by physical methods of analysis. The authors have determined the solubility of maleic acid monoamide in organic solvents with different properties and dielectric constant values. The paper describes the solvent ratio allowing the analysis with the best metrological properties. The reaction between p-toluidine and maleic anhydride to form (2z)-4-(methylanilino)-4-oxobut-2-enoic acid proceeds with high yield; mass fraction of the main substance is 94.23±0.69 %.

 p-toluidine maleic anhydride (2z)-4-(methylanilino)-4-oxobut-2-enoic acid IR and NMR1H- spectroscopy potentiometric titration metrological characteristics

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