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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 | Regular issue | Vol 20, No. 10, 1983, pp.1907-1912
Published online, 1st January, 1970■ Stereoselective [3+2] Cycloaddition Reaction of Pyridinium and Thiazolium Methylides to Electron-deficient Olefinic Dipolarophiles
Published online, 1st January, 1970
DOI: 10.3987/R-1983-10-1907
■ Stereoselective [3+2] Cycloaddition Reaction of Pyridinium and Thiazolium Methylides to Electron-deficient Olefinic Dipolarophiles
Otohiko Tsuge, Shuji Kanemasa, and Shigeori Takenaka
*Graduate School of Engineering Sciences, Kyushu University, 6-1, Kasuga-koen, Kasuga 816-8580, Japan
Abstract
The cycloaddition reaction of pyridinium and thiazolium methylides to electron-deficient olefinic dipolarophiles has been found to take place through an endo approach of the anti-ylides to the dipolarophiles affording the stereoselective [3 + 2] cycloadducts in quantitative yields.
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