Abstract Lithium, sodium and potassium derivatives of (benzo)salicylaldehydes have been prepared and characterized by 1 H and 13 C NMR in order to see how the metal cation and benzoannulation affect spectral parameters. There is no qualitative effect of the alkali metal atom in the compounds studied (from this point of view salicylaldehydes remind β-diketones). On the other hand, 1 H chemical shifts
摘要 为了观察金属阳离子和苯并环化如何影响光谱参数,已经制备了(苯并)水杨醛的锂、钠和钾衍生物并通过 1 H 和 13 C NMR 对其进行了表征。所研究的化合物中的碱金属原子没有定性影响(从这个角度来看,水杨醛提醒了 β-二酮)。另一方面,羟基和甲酰基质子的 1 H 化学位移和 C2(带有 OX、X = H、Li、Na 或 K)的 13 C 化学位移以及甲酰基碳显示出最显着的变化是最好的水杨醛六元准环芳香特性的指标。相比之下,C1(带有甲酰基部分)对碱性阳离子几乎是惰性的,但很好地反映了苯并环化的位置。
Synthesis and characterization of rhenium complexes with salicylaldehyde