Proton-transfer reactions. 4. Near-unity kinetic isotope effects for hydron exchange and dehydrofluorination reactions

HF Koch, DB Dahlberg, G Lodder…

文献索引：Koch, Heinz F.; Dahlberg, Donald B.; Lodder, Gerrit; Root, Karen S.; Touchette, Nancy A.; et al. Journal of the American Chemical Society, 1983 , vol. 105, # 8 p. 2394 - 2398

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被引用次数: 17

摘要

Abstract: Rates and isotope effects are reported for benzylic hydron exchange and dehydrofluorination reactions of C6H5CiHC1CF3 (I) and C6H5CiH (CF3) 2 (11) in alcoholic sodium alkoxide solutions. Reactions of I were studied in ethanol and isotope effects are reported at 75 OC:(kH/kD), ch= 1.06,(kH/kD), li,= 1.04, and (kEtoD/kEtoH)= 2.3. Exchange occurs 9-10 times faster than does elimination. Reactions of I1 were studied in both ...