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Yoshito Kishi (1937-2023)
Yoshito Kishi (1937-2023)
Professor. Yoshito Kishi,
a member of the Honorary Editorial Associates of HETEROCYCLES,
has passed away on January 9, 2023 at the age of 85.
I deeply express my regret over his death.
Kunio Ogasawara
Editor
January 13, 2023
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Paper | Regular issue | Vol 43, No. 3, 1996, pp.675-683
Published online, 1st January, 1970■ The Diastereoselective Synthesis of Oxacephams from 1,3-2H-Oxazines
Published online, 1st January, 1970
DOI: 10.3987/COM-95-7358
■ The Diastereoselective Synthesis of Oxacephams from 1,3-2H-Oxazines
Mostafa Hatam, Sabine Köpper, Jürgen Martens*
*Fachbereich Chemie, Universität Oldenburg, P. O. Box 2503, D-26111 Oldenburg, Germany
Abstract
Various oxacephams are obtained from symmetrically and unsymmetrically 2,2,5,5-substituted 1,3-2H-oxazines by the Staudinger reaction. The annulation reaction proceeds diastereoselectively with both synthons, as unequivocally determined by nmr spectroscopical analysis.
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