react with substituted carbodiimides, affording hitherto unknown 1,2-dihydro-1,2,3-triazine derivatives. The structures of three novel compounds of this type and their perchlorate salts were elucidated by spectroscopic (IR, 1H and 13C NMR and 15N solid-state NMR) and X-ray diffraction methods. The acid/base properties were also determined experimentally and by using DFT calculations with the B3LYP
结果表明
胍且其N,N-二甲基衍
生物与取代的碳二
亚胺反应,得到迄今未知的1,2-二氢-1,2,3-三嗪衍
生物。通过光谱(IR,1 H和13 C NMR和15 N固态NMR)和X射线衍射方法阐明了三种新型化合物及其
高氯酸盐的结构。酸/碱性质也通过实验确定,并通过使用具有B3LYP功能的DFT计算来确定。发现最基本的化合物是二氢三嗪 3,碱度,其与p的ķ一的23.3的值是相同的数量级顺序为的
四甲基胍。酸度测量表明,所有研究的化合物都是非常弱的酸,p K a值在25.8–30.8 p K a单位范围内。
乙腈。