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Electrochemical reduction of 4-chloro-2-nitrophenol

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Abstract

Reduction of 4-chloro-2-nitrophenol to 2-amino-4-chlorophenol has been studied by classical polarography, polarization measurements on solid electrodes, and electrolysis at the controlled potential and in the galvanostatic mode. Based on the results of preparative electrosynthesis of 2-amino-4-chlorophenol, the optimum conditions were found, which ensure a yield of more than 95% and a current efficiency up to 78%. They include: a Cr18Ni10Ti stainless steel cathode, a current density of 0.1–0.15 A cm−2, T = 60–70 °C, a buffer solution (a 0.4 M NH4Cl solution + 2.4–3.8% NH4OH, pH 9.5–10.4) as an electrolyte.

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Authors and Affiliations

  1. State Scientific Center “NIOPIK”, Build. 4, 1 ul. Bolshaya Sadovaya, 123995, Moscow, Russian Federation

    A. A. Konarev

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  1. A. A. Konarev
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Correspondence to A. A. Konarev.

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Konarev Alexander Andreevich, born in 1953, Doctor of Technical Sciences, Chief Researcher of the State Scientific Center “NIOPIK”, Honored Inventor of the Russian Federation, Leading Specialist in the field of electrochemical membrane technologies for obtaining various classes of organic and inorganic compounds, Candidate for Corresponding Members of the Russian Academy of Sciences in the elections of 2022. He developed and implemented the technology for obtaining the pharmacopoeia substance of ferrocin; electrochemical membrane technology for the production of oxycobalamin hydrochloride and the drug “Oxycobalamin-lyo” based on it; electromembrane technologies for the purification of tuberculin solutions from ammonium sulfate; electromembrane technologies for the production of taurine, tetramethylammonium hydroxide concentrate, and metal-free developer PP-051MS based on it. A. A. Konarev is the author of 140 articles and 35 patents and author’s certificates.

Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, Vol. 72, No. 2, pp. 500–506, February, 2023.

No human or animal subjects were used in this research.

The authors declare no competing interests.

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Konarev, A.A. Electrochemical reduction of 4-chloro-2-nitrophenol. Russ Chem Bull 72, 500–506 (2023). https://doi.org/10.1007/s11172-023-3813-4

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  • DOI: https://doi.org/10.1007/s11172-023-3813-4

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