Challenge to detect 1,4-zwitterions spectroscopically in a ketene-alkene reaction |
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| Authors: | Machiguchi Takahisa Okamoto Junko Morita Yumiko Hasegawa Toshio Yamabe Shinichi Minato Tsutomu |
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| Affiliation: | Department of Chemistry, Faculty of Science, Saitama University, Sakura-ku, Saitama 338-8570, Japan. machiguc@chem.saitama-u.ac.jp |
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| Abstract: | The first example of direct spectroscopic detection of transient species, 1,4-zwitterions, generated in a ketene-alkene reaction is reported. Also, a striking result of the intervention of an unprecedented "1,4-zwitterion neutral dimer" is presented in a new mechanistic pathway; the ketene-alkene reaction gives the product cyclobutanone from the initial cycloadduct alpha-methyleneoxetane. |
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