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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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December 24, 2019
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Note | Special issue | Vol 67, No. 2, 2006, pp.777-784
Published online, 8th November, 2005■ Regioselective Synthesis of 4-Alkylpyridines from Pyridine and Aldehydes via Dipole Reversal Process of 1,4-Dihydropyridine Phosphonate
Published online, 8th November, 2005
DOI: 10.3987/COM-05-S(T)49
■ Regioselective Synthesis of 4-Alkylpyridines from Pyridine and Aldehydes via Dipole Reversal Process of 1,4-Dihydropyridine Phosphonate
Phil Ho Lee,* Kooyeon Lee, Jun Hwan Shim, Seong Guk Lee, and Sundae Kim
*Department of Chemistry, Kangwon National University, Chuncheon, Kangwon 200-701, Korea
Abstract
4-Alkylation of pyridine has been accomplished by the reaction of ylides, derivated from 1,4-dihydropyridine phosphonate via phosphonioalkoxycarbonylation of pyridine with aldehydes and subsequent elimination of diisopropyl phosphate followed by aromatization with potassium tert-butoxide.
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