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Zenichi Yoshida (1925-2023)
Zenichi Yoshida (1925-2023)
Professor. Zenichi Yoshida,
a member of the Honorary Advisors of HETEROCYCLES (1975-1998),
has passed away on May 4, 2023 at the age of 97.
I deeply express my regret over his death.
Kunio Ogasawara
Editor
May 11, 2023
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Report | Regular issue | Vol 23, No. 5, 1985, pp.1127-1130
Published online, 1st January, 1970■ Efficient Synthesis of 1,1‘-Methylenebis-1H-pyrrole Derivatives
Published online, 1st January, 1970
DOI: 10.3987/R-1985-05-1127
■ Efficient Synthesis of 1,1‘-Methylenebis-1H-pyrrole Derivatives
Carlos Gonzalez R. and Robert Greenhouse*
*División de Investigación, Syntex S.A. de C.V., Apartado Postal 272 (CIVAC), Jiutepec, Morelos, México, cp 62500, Mexico
Abstract
The title compounds may be prepared efficiently by the reaction of methylene chloride with the pyrrolyl anion generated under phase-transfer conditions. The spectral characteristics of these relatively unknown compounds are discussed.
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