Preparation and thermal ring opening of 1-(methylthio)cyclopropenes.
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概要
- 論文の詳細を見る
The reaction of (methylthio)diphenyl- and methyl(methylthio)phenylcyclopropenium salts with Grignard reagents (methyl, 1-methylethyl, and phenyl) yielded 1-(methylthio)cyclopropenes as major products together with isomeric 3-methylthio-1-cyclopropenes in moderate total yields. Phenyllithium also reacted similarly with the salt to afford cyclopropenes in lower yields. Thermal ring opening of 1-(methylthio)cyclopropenes took place readily at room temperature or on heating at around 80 °C to give indene and/or butadiene derivatives in good yields. Product analysis of the reaction in methanol as well as kinetic studies of one of 1-(methylthio)cyclopropenes gave strong evidence for the intermediacy of vinylcarbene in the ring opening of cyclopropene.
- 公益社団法人 日本化学会の論文
著者
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Kato Makoto
Department Of Geology And Mineralogy Faculty Of Science Hokkaido University
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Yoshida Hiroshi
Departmen Of Radiology School Of Medicine Asahikawa Medical University
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Matsumoto Kiyoshi
College of Liberal Arts and Sciences, Kyoto University
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Sano Hiroe
Department of Applied Chemistry, Faculty of Engineering, Shizuoka University
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Ogata Tsuyoshi
Department of Applied Chemistry, Faculty of Engineering, Shizuoka University
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