作者:Frank G. Riddell、Eric S. Turner、Alan Boyd
DOI:10.1016/s0040-4020(01)99491-8
日期:1979.1
A study of the nitrogen inversion process in the bicyclic oxazine, N-methyl-2-oxa-3-azabicyclo[2,2,2]octane, by 13C NMR spectrocopy reveals a free energy of activation of 14.9 kcal mole-1. Detailed examination of the kinetics of the process observed in the 1H spectra of N-methyl tetrahydro-1,2-oxazine shows ΔH≠ 15.1±0.4 kcal mole-1 and ΔS≠ 2.3 ±1.5 cal mol-1K-1. It is concluded from the similarity
通过13 C NMR光谱对双环恶嗪N-甲基-2-氧杂-3-氮杂双环[2,2,2]辛烷中的氮转化过程进行研究,发现其活化能为14.9 kcal mole -1。在N-甲基四氢-1,2-恶嗪的1 H光谱中详细观察该过程的动力学,结果显示ΔH ≠ 15.1±0.4 kcal mole -1和ΔS ≠ 2.3±1.5 cal mol -1 K -1。从活化参数的相似性可以得出结论,这两个过程都是由氮转化引起的。