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Obituary
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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Short Paper | Regular issue | Vol 96, No. 5, 2018, pp.895-901
Published online, 19th April, 2018
Published online, 19th April, 2018
DOI: 10.3987/COM-17-13846
■ Preparation of Chiral β-Enamino Esters from Methyl Propiolate: Synthesis of Chiral Methyl 1-Substituted 6-Oxo-1,4,5,6-tetrahydropyridine-3-carboxylates
Hugo Pilotzi, Dino Gnecco,* María L. Orea,* Jorge R. Juárez, David M. Aparicio, and Joel L. Terán
*Centro de Química, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Edif. IC9, Complejo de Ciencias, C. U. 72570 Puebla, Pue., Mexico
Abstract
An efficient procedure to prepare chiral β-enamino esters by reaction of methyl propiolate with chiral amines is described. Aza-annulation of these chiral β-enamino esters with acryloyl chloride afforded the corresponding chiral methyl 1-substituted 6-oxo-1,4,5,6-tetrahydropyridine-3-carboxylates in good yield.
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