Isotope effects for Lewis acid catalyzed
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Daniel A. Singleton; Steven R. Merrigan; Brett R. Beno; K.N. Houk
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Article
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1999
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Elsevier Science
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French
⚖ 289 KB
2H and 13C kinetic isotope effects were determined for all positions on isoprene in its reactions with methyl vinyl ketone, ethyl acrylate, and acrolein catalyzed by Et2AICI. The results are taken as supporting a highly asynchronous concerted [4+2] cycloaddition. Comparison of the experimental isoto