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Nakahara K, Naba K, Saitoh T, Sugai T, Obata R, Nishiyama S, Einaga Y, Yamamoto T. Electrochemical Pinacol Coupling of Acetophenone Using Boron‐Doped Diamond Electrode. ChemElectroChem 2019. [DOI: 10.1002/celc.201900202] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Kenshin Nakahara
- Department of ChemistryKeio University 3-14-1 Hiyoshi Yokohama 223-8522 Japan
| | - Keisuke Naba
- Department of ChemistryKeio University 3-14-1 Hiyoshi Yokohama 223-8522 Japan
| | - Tsuyoshi Saitoh
- International Institute for Integrative Sleep Medicine (WPI-IIIS)University of Tsukuba 1-1-1 Tennodai Tsukuba 305-8575 Japan
| | - Tomoya Sugai
- International Institute for Integrative Sleep Medicine (WPI-IIIS)University of Tsukuba 1-1-1 Tennodai Tsukuba 305-8575 Japan
| | - Rika Obata
- Research and Education Center for Natural SciencesKeio University 4-1-1 Hiyoshi Yokohama 223-8521 Japan
| | - Shigeru Nishiyama
- Department of ChemistryKeio University 3-14-1 Hiyoshi Yokohama 223-8522 Japan
| | - Yasuaki Einaga
- Department of ChemistryKeio University 3-14-1 Hiyoshi Yokohama 223-8522 Japan
- JST-ACCEL 5-3 Yonbancho Chiyoda, Tokyo 102-8666 Japan
| | - Takashi Yamamoto
- Department of ChemistryKeio University 3-14-1 Hiyoshi Yokohama 223-8522 Japan
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Egashira N, Morita SI, Hifumi E, Mitoma Y, Uda T. Attomole Detection of Hemagglutinin Molecule of Influenza Virus by Combining an Electrochemiluminescence Sensor with an Immunoliposome That Encapsulates a Ru Complex. Anal Chem 2008; 80:4020-5. [DOI: 10.1021/ac702625d] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Naoyoshi Egashira
- Department of Environmental Sciences, Faculty of Life and Environmental Sciences, Prefectural University of Hiroshima, Shobara-shi, Hiroshima, Japan, Research Center for Applied Medical Engineering, Oita University, Oita-shi, Oita, 870-1192, Japan, CREST, Japan Science and Technology Agency (JST), Kawaguchi-shi, Saitama 332-0012, Japan, and Department of Applied Chemistry, Faculty of Engineering, Oita University, Oita-shi, Oita, 870-1192, Japan
| | - Shin-ichi Morita
- Department of Environmental Sciences, Faculty of Life and Environmental Sciences, Prefectural University of Hiroshima, Shobara-shi, Hiroshima, Japan, Research Center for Applied Medical Engineering, Oita University, Oita-shi, Oita, 870-1192, Japan, CREST, Japan Science and Technology Agency (JST), Kawaguchi-shi, Saitama 332-0012, Japan, and Department of Applied Chemistry, Faculty of Engineering, Oita University, Oita-shi, Oita, 870-1192, Japan
| | - Emi Hifumi
- Department of Environmental Sciences, Faculty of Life and Environmental Sciences, Prefectural University of Hiroshima, Shobara-shi, Hiroshima, Japan, Research Center for Applied Medical Engineering, Oita University, Oita-shi, Oita, 870-1192, Japan, CREST, Japan Science and Technology Agency (JST), Kawaguchi-shi, Saitama 332-0012, Japan, and Department of Applied Chemistry, Faculty of Engineering, Oita University, Oita-shi, Oita, 870-1192, Japan
| | - Yoshiharu Mitoma
- Department of Environmental Sciences, Faculty of Life and Environmental Sciences, Prefectural University of Hiroshima, Shobara-shi, Hiroshima, Japan, Research Center for Applied Medical Engineering, Oita University, Oita-shi, Oita, 870-1192, Japan, CREST, Japan Science and Technology Agency (JST), Kawaguchi-shi, Saitama 332-0012, Japan, and Department of Applied Chemistry, Faculty of Engineering, Oita University, Oita-shi, Oita, 870-1192, Japan
| | - Taizo Uda
- Department of Environmental Sciences, Faculty of Life and Environmental Sciences, Prefectural University of Hiroshima, Shobara-shi, Hiroshima, Japan, Research Center for Applied Medical Engineering, Oita University, Oita-shi, Oita, 870-1192, Japan, CREST, Japan Science and Technology Agency (JST), Kawaguchi-shi, Saitama 332-0012, Japan, and Department of Applied Chemistry, Faculty of Engineering, Oita University, Oita-shi, Oita, 870-1192, Japan
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Isse AA, Gennaro A. Mechanism of the Electrochemical Carboxylation of Aromatic Ketones in Dimethylformamide. ACTA ACUST UNITED AC 2003. [DOI: 10.1135/cccc20031379] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The mechanism of the electrochemical carboxylation of several benzophenones (X-C6H4COC6H5; X = 4-OCH3, 4-CH3, H, 3-Cl, 3-CF3, 4-CF3 and 4-CN) and several ring-substituted acetophenones (Y-C6H4COCH3; Y = 4-OCH3, H, 3-OCH3, 3-Cl, 3-CF3, 4-CF3, 3-CN and 4-CN) has been investigated by cyclic voltammetry in dimethylformamide. In the presence of CO2, all compounds exhibit a single irreversible peak representing a 2 e reduction process. The reaction mechanism has been analysed using the dependence of the peak potential Ep on various experimental parameters such as the concentrations of the reactant, the scan rate and the temperature. Also the kinetics of the electrocarboxylation reaction has been examined. The whole set of results has been carefully analysed in the framework of an ECE-DISP mechanism. It has been found that, under the conditions employed, the electrocarboxylation reaction is always under a mixed ECE-DISP1 kinetic control. The first step of the reaction is an attack, via the oxygen atom, of the electrogenerated ketyl radical anion RR'CO•- at CO2. Further reduction of the carbonate-like adduct arising by such an attack followed by a second carboxylation reaction gives an arene-2-carboxylic acid.
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