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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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Communication | Special issue | Vol 37, No. 1, 1994, pp.207-212
Published online, 1st January, 1970■ Kinetic vs Thermodynamic Product Distributions of Macrocyclic Tetrapyrrole Cyclization Products from 1,19-Disubstituted A,C-Biladiene Salts
Published online, 1st January, 1970
DOI: 10.3987/COM-93-S29
■ Kinetic vs Thermodynamic Product Distributions of Macrocyclic Tetrapyrrole Cyclization Products from 1,19-Disubstituted A,C-Biladiene Salts
Kevin R. Gerzevske, Jack J. Lin, and Kevin M. Smith*
*Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, CA 95616-5295, U.S.A.
Abstract
Chromium(III) promoted oxidative cyclization reactions of a,c-biladiene hydrobromides bearing bulky 1- and 19-substituents to give macrocyclic products are partially reversible; depending upon the reaction temperature, kinetic or thermodynamic products are formed and identified.
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