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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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Report | Regular issue | Vol 16, No. 10, 1981, pp.1735-1738
Published online, 1st January, 1970■ A New Product in the Photooxidation of Berberine: A Lactamic Aldehyde
Published online, 1st January, 1970
DOI: 10.3987/R-1981-10-1735
■ A New Product in the Photooxidation of Berberine: A Lactamic Aldehyde
M. Leonor Contreras* and Roberto Rozas
*Department of Chemistry, Facluty of Science, University of Santiago of Chile, Casilla 56559, Santiago-2, Chile
Abstract
Berberinium chloride (1) unsensitized photooxidation in the presence of sodium methoxide affords the lactamic aldehyde (2) in contrast to the already informed sensitized reaction that furnishes the betaine (3).
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