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Obituary
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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Communication | Regular issue | Vol 22, No. 7, 1984, pp.1513-1518
Published online, 1st January, 1970■ Autoxidation of Nitrogen Heterocycles. 1. Ultraviolet Spectra of Alkylpyrroles. Evidence for a Molecular Association Complex between Oxygen and 2,5-Dimethylpyrrole in Non-polar Media
Published online, 1st January, 1970
DOI: 10.3987/R-1984-07-1513
■ Autoxidation of Nitrogen Heterocycles. 1. Ultraviolet Spectra of Alkylpyrroles. Evidence for a Molecular Association Complex between Oxygen and 2,5-Dimethylpyrrole in Non-polar Media
John V. Cooney* and Robert N. Hazlett
*Chemsitry Division, Naval Research Laboratory, Washington, D. C. 20375, U.S.A.
Abstract
Ultraviolet spectroscopy indicates that molecular oxygen associates extensively and reversibly with 2,5-dimethylpyrrole in hydrocarbon solution. The formation of such a molecular association complex is believed to be the first step in the principal autoxidation sequence for this pyrrole.
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