The title compounds were promptly obtained in fair to good yields as distillable liquids by admixing 1,3,5-triarylhexahydro-1,3,5-triazines (1) with n-butyl nitrite (2) in anhydrous CH2Cl2 and were fully characterized by 1H and 13C NMR, IR, and MS. The pure products were invariably made up of geometric isomers which did not interconvert rapidly at room temperature. o-Substituents could cause difficulties in the free rotations of the aryl substituent about the C–N bond as well of the α-butoxymethyl group. The reaction is believed to occur on the monomeric imines derived from the thermal equilibration of their trimeric and dimeric precursors. Aliphatic hexahydrotriazines were found to be unreactive under the present conditions.
标题化合物以适中的至良好的产率迅速获得,作为可蒸馏液体,通过在无
水CH2Cl2中将1,3,5-三芳基六氢-
1,3,5-三嗪(1)与正丁基
亚硝酸酯(2)混合,并通过1H和13C NMR、IR和质谱进行了全面表征。纯产品始终由几何异构体组成,这些异构体在室温下不会快速相互转化。邻位取代基可能会导致芳基取代基绕C–N键的自由旋转和α-丁氧基甲基团的自由旋转出现困难。反应被认为发生在从其三聚体和二聚体前体的热平衡中衍生的单体
亚胺上。在现有条件下,脂肪族六氢三嗪被发现不活泼。