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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 38, No. 1, 1994, pp.71-80
Published online, 1st January, 1970■ A Synthesis of Pyrano[2,3-c]pyrroles from Cinnamoyloximinoacetonitrile
Published online, 1st January, 1970
DOI: 10.3987/COM-93-9462
■ A Synthesis of Pyrano[2,3-c]pyrroles from Cinnamoyloximinoacetonitrile
Galal A. M. Nawwar,* Randa H. Swellem, and Laila M. Chabaka
*Natural Products Department, National Research Centre, Dokki, Cairo, Egypt
Abstract
An approach to the title ring system starting with the available cinnamoyloximinoacetonitrile (1) is proposed. It involves its reaction with various nucleophiles and subsequent addition of the resulting pyrrole derivatives (3,4) to 2-substituted cinnamonitriles (5), in a Micheal type reaction, thus affording the pyrano[2,3-c]pyrroles (6).
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