Mechanisms of elimination reactions. 38. Why is the effect of successive. beta.-alkyl substitution on the rates of elimination from quaternary ammonium salts …

SL Wu, YT Tao, WH Saunders Jr

文献索引：Wu, Shune-Long; Tao, Yu-Tai; Saunders, William H. Journal of the American Chemical Society, 1984 , vol. 106, p. 7583 - 7588

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被引用次数: 3

摘要

Abstract: Possible reasons are examined for the nonadditivity of the effect of successive P- methyl substitution on the rates of elimination reactions of quaternary ammonium salts. The temperature dependences of the deuterium isotope effects in E2 reactions of RIR2NMe2+ show that tunneling is not a significant source of nonadditivity. Neither is a change of gross mechanism or stereochemistry, for studies with C4H9CHDCHDNMe3+ and C, HQ (CH:~) ...