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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 83, No. 4, 2011, pp.827-835
Published online, 2nd March, 2011
Published online, 2nd March, 2011
DOI: 10.3987/COM-11-12146
■ Heck-Mizoroki Reaction of 4-Iodo-1H-pyrazoles
Yoshihide Usami,* Hayato Ichikawa, and Shinya Harusawa
*Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
Abstract
The Heck-Mizoroki reaction of 1-protected-4-iodo-1H-pyrazoles with various kinds of alkenes was examined and found to yield 1-protected-4-alkenyl-1H-pyrazoles. P(OEt)3 was a suitable ligand for the cross-coupling reaction, together with the trityl group that acted as an appropriate protecting group of 1H-pyrazole.
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