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Zenichi Yoshida (1925-2023)
Zenichi Yoshida (1925-2023)
Professor. Zenichi Yoshida,
a member of the Honorary Advisors of HETEROCYCLES (1975-1998),
has passed away on May 4, 2023 at the age of 97.
I deeply express my regret over his death.
Kunio Ogasawara
Editor
May 11, 2023
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Paper | Regular issue | Vol 31, No. 11, 1990, pp.1959-1965
Published online, 1st January, 1970■ Indirect Electrochemical Oxidation of 4-Picoline and Its N-Oxides to Pyridine-4-aldehyde Diacetate with Electrogenerated Cobalt(III) Acetate in an In-Cell Process
Published online, 1st January, 1970
DOI: 10.3987/COM-90-5489
■ Indirect Electrochemical Oxidation of 4-Picoline and Its N-Oxides to Pyridine-4-aldehyde Diacetate with Electrogenerated Cobalt(III) Acetate in an In-Cell Process
Magdi Abdel Azzem and Eberhard Steckhan*
*Institut für Organische Chemie und Biochemie, Universität Bonn, Gerhard-Domagk-Str. 1, D-5300 Bonn 1, Germany
Abstract
The indirect electrooxidation of 4-picoline and its N-oxide with in situ electrogenerated Co(III) acetate has been studied. Pyridine-4-aldehyde diacetate was obtained in good ield (45 - 68%), if the electrolysis was performed in acetic anhdride at 20 °C in an undivided cell under controlled current conditions.
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