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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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Paper | Regular issue | Vol 31, No. 10, 1990, pp.1811-1817
Published online, 1st January, 1970■ Studies on Dimethylhyddrazones of Heteroaryl Aldehydes. The Reactivity of 2-Formylfuran, 2-Formylthiophene and 1-Methyl-2-formylpyrrole N,N-Dimethylhydrazones with Methyl Propiolate and Diethyl Azodicarboxylate
Published online, 1st January, 1970
DOI: 10.3987/COM-90-5477
■ Studies on Dimethylhyddrazones of Heteroaryl Aldehydes. The Reactivity of 2-Formylfuran, 2-Formylthiophene and 1-Methyl-2-formylpyrrole N,N-Dimethylhydrazones with Methyl Propiolate and Diethyl Azodicarboxylate
Belén Abarca,* Rafael Ballesteros, Eugenia González, Pedro Sancho, José Sepúlveda, and Concepción Soriano
*Departamento de Química Orgánica, Facultad de Farmacia, Universidad de Valencia, Avda. Blasco Ibañez 13, 46010 Valencia, Spain
Abstract
The title hydrazones react with methyl propiolate giving the new 2-heteroarylpyridines (4, 5 and 6). The reaction with diethyl azodicarboxylate gives 1 : 1 Michael adducts except with formylthiophene hydrazone that gives the compound (14) a novel type of 1 : 1 adduct.
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