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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.2065-2071
Published online, 1st January, 1970■ The Reactivity fo 2-Iminobenzo[α]quinolizidines towards 2-Mercaptoacetic Acid
Published online, 1st January, 1970
DOI: 10.3987/COM-90-5570
■ The Reactivity fo 2-Iminobenzo[α]quinolizidines towards 2-Mercaptoacetic Acid
J. Carlos Menéndez and Mónica M. Söllhuber*
*Departamento de Química Orgánica y Farmacéutica, Facultad de Farmacia, Universidad Complutense de Madrid, Ciudad Universitaria, 28040 Madrid, Spain
Abstract
The reaction between 2-aminobenzo[a]quinolizidines (2) and mercaptoacetic acid under a variety of conditions led to the thiazolo[2,3-a]isoquinoline derivative (5) instead of the expected spiro compound (1). The same result was obtained when the reaction was carried out on ketone (3). Modified reaction conditions allowed the preparation of an example of structure (1).
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