Comparative studies for selective deprotection of the N-arylideneamino moiety from heterocyclic amides: kinetic and theoretical studies. Part 2
作者:Nouria A. Al-Awadi、Yehia A. Ibrahim、Hicham H. Dib、Maher R. Ibrahim、Boby J. George、Mariam R. Abdallah
DOI:10.1016/j.tet.2006.04.054
日期:2006.6
synthesized and pyrolyzed in the gas phase. The kinetic effect of changing the substituent on the triazine ring from hydrogen to methyl, phenyl, and styryl was measured. Analyses of the pyrolyzates of 2–5 showed the elimination products to be benzonitrile and the triazine fragment, while the pyrolyzates of 6 and 7 reveal the formation of cis- and trans-cinnamonitriles. Theoretical study of the pyrolysis reactions
4-苄基氨基-1,2,4-三嗪-3,5(2 ħ,4 ħ) -二酮(2 - 5),6-苯乙烯基-1,2,4-三嗪-3,5(2 ħ,4合成了H)-二酮(6)和6-苯乙烯基-2,3-二氢-3-硫代-1,2,4-三嗪-5(4 H)-一(7),并在气相中进行了热解。测量了将三嗪环上的取代基从氢变为甲基,苯基和苯乙烯基的动力学效果。对2 – 5的热解产物的分析表明,消除产物为苄腈和三嗪片段,而6和7的热解产物为揭示了顺式和反式肉桂腈的形成。使用从头开始的SCF方法对2 – 5的热解反应进行了理论研究。