Some reactivity in the oxidation of methanol to formaldehyde has been spectroscopically detected on the methanolic mother liquors of a copper(II) complex of a Schiff base ligand derived from the condensation of 8-hydroxyquinoline-2-carboxaldehyde and 2-tosylaminomethylaniline. An investigation has shown that 2-tosylaminomethylaniline (HATS) plays a dual role in the oxidative process acting as a N-donor ligand and reacting in situ with formaldehyde, which leads to 3-tosyl-1,2,3,4-tetrahydroquinazoline (1). This was characterized by using both spectroscopic and X-ray diffraction techniques. The influence of 8-hydroxyquinoline derivatives, water and ligand stoichiometry on the yield of 1 was studied.
在
甲醇母液中通过光谱法检测到一些
甲醇氧化生成
甲醛的反应活性,这些母液来自于一个
铜(II)配合物,其
配体是一种席夫碱,由
8-羟基喹啉-2-醛和2-
甲苯磺酰胺甲基
苯胺缩合而成。研究表明,2-
甲苯磺酰胺甲基
苯胺(HA
TS)在氧化过程中发挥双重作用,既作为N供体
配体,又能在原位与
甲醛反应,生成3-
甲苯磺酰基-1,2,3,4-四氢
喹唑啉(1)。这一过程通过光谱学和X射线衍射技术进行了表征。此外,还研究了
8-羟基喹啉衍
生物、
水和
配体配比对产物1产率的影响。