Evidence for extensive recombination of the ring-opened to the original cyclic molecular ions of 2-substituted piperidines and pyrrolidines after electron impact
作者:Uwe I. Záhorszky
DOI:10.1039/p29830001655
日期:——
of (M– alkyl)+ ions by α-fission of 2,2-dialkyl-substituted N-ethylpiperidines (2) and -pyrrolidines (3) and the virtual absence of ring degradation products is caused by facile recombination of the ring-opened to the original cyclic molecular ions. Suppression of ring opening of the initially formed molecular ions or conversion of the ring-opened into other isomeric molecular ions as explanations
通过α-裂变2,2-二烷基取代的N-乙基哌啶(2)和-吡咯烷(3)形成(M-烷基)+离子异常不同寻常的形成是,实际上不存在环降解产物是由于开环到原始的环状分子离子。作为对(2)和(3)的质谱行为的解释,排除了最初形成的分子离子的开环的抑制或开环向其他异构分子离子的转化。