(N-Methyl-2-piperidyl)phenyl ketoxime acetate(10b) and (N-methyl-2-pyrrolidinyl)-phenyl ketoxime acetate (13b) undergo quantitative fragmentation in 80% ethanol to yield benzonitrile and the cyclic imonium salts 11 and 14. Their reaction rates are approx. 107 and 108, respectively, as high as those calculated for the homomorphous compounds, viz. 2-methylcyclohexylphenyl ketoxime acetate (12b) and
(N-甲基-2-
哌啶基)苯基酮
肟酯(10b)和(N-甲基-2-
吡咯烷基)-苯基酮
肟酯(13b)在80%
乙醇中进行定量裂解,生成
苄腈和环状亚
铵盐11和14。它们的反应速率约为。10 7和10 8分别与对同态化合物计算的结果一样高。2-甲基环己基苯基酮
肟酯(12b)和2-甲基
环戊基苯基酮酮
肟(15b)),它们会进行定量的贝克曼重排。因此,即使像10b那样,在立体电子学上合适的构象不是普遍的构象时,同步断裂也为电离提供了非常大的驱动力。