Nitrate Upcycling Mediated by Organonickel Catalysis.

Autor: Padmanaban S; Department of Chemistry, Seoul National University, Seoul, 08826, Republic of Korea., Chun J; Department of Chemistry, Seoul National University, Seoul, 08826, Republic of Korea., Lee Y; Department of Chemistry and Research Institute of Physics and Chemistry, Jeonbuk National University, Jeonju, 54896, Republic of Korea., Cho KB; Department of Chemistry and Research Institute of Physics and Chemistry, Jeonbuk National University, Jeonju, 54896, Republic of Korea., Choi J; Department of Chemistry Education, Chonnam National University, Gwangju, 61186, Republic of Korea., Lee Y; Department of Chemistry, Seoul National University, Seoul, 08826, Republic of Korea.
Jazyk: angličtina
Zdroj: Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2024 Sep 23; Vol. 63 (39), pp. e202408457. Date of Electronic Publication: 2024 Jul 17.
DOI: 10.1002/anie.202408457
Abstrakt: Nitrogen oxides (NO x ) are major environmental pollutants and to neutralize this long-term environmental threat, new catalytic methods are needed. Although there are biological denitrification processes involving four different enzymatic reactions to convert nitrate (NO 3 - ) into dinitrogen (N 2 ), it is unfortunately difficult to apply in industry due to the complexity of the processes. In particular, nitrate is difficult to functionalize because of its chemical stability. Thus, there is no organometallic catalysis to convert nitrate into useful chemicals. Herein, we present a nickel pincer complex that is effective as a bifunctional catalyst to stepwise deoxygenate NO 3 - by carbonylation and further through C-N coupling. By using this nickel catalysis, nitrate salts can be selectively transformed into various oximes (>20 substrates) with excellent conversion (>90 %). Here, we demonstrate for the first time that the highly inert nitrate ion can be functionalized to produce useful chemicals by a new organonickel catalysis. Our results show that the NO x conversion and utilization (NCU) technology is a successful pathway for environmental restoration coupled with value-added chemical generation.
(© 2024 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH.)
Databáze: MEDLINE
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