Reaction of Salicylamine with α-Dicarbonyl Compounds. II. Formation of 2,2′-Bibenz-1,3-oxazines
作者:Hajime Kanatomi、Ichiro Murase
DOI:10.1246/bcsj.43.226
日期:1970.1
The compounds of a new type, 2,2′-bibenz-1,3-oxazine and its derivatives have been synthesized by the reactions of salicylamines with glyoxal or α-diketones in methanol at a temperature lower than 20°C. The oxazine structures were confirmed by infrared spectroscopy in solid state and by NMR spectroscopy in CCl4, CDCl3 and chlorobenzene. An oxazine-Schiff base equilibrium was observed in pyridine and
通过水杨胺与乙二醛或α-二酮在甲醇中在低于20°C的温度下反应合成了新型化合物2,2'-联苯-1,3-恶嗪及其衍生物。恶嗪结构通过固态红外光谱和 CCl4、CDCl3 和氯苯中的 NMR 光谱证实。通过NMR光谱观察到在吡啶和热氯苯中的恶嗪-席夫碱平衡。发现2,2'-二甲基-2,2'-联苯并恶嗪的水解分解导致通过氨基转移形成水杨基水杨胺。用分光光度法研究了机理。