range of quinazoline derivatives was fabricated with excellent yields using 0.5 mol% Pd(II) catalyst loading. The catalyticcoupling process was performed under aerobic conditions and water is the only by-product. With data from the control experiments, a plausible mechanism for the dehydrogenative coupling reaction was proposed via a cyclic aminal intermediate through the oxidation of alcohol to aldehyde
报道了一种新的钯 ( II ) N、N、O型配合物促进喹唑啉单锅级联合成,通过容易获得的醇和 2-氨基苄胺的脱氢偶联。一组独特的 Pd( II ) 配合物 ( 1-2 ) 被合成并通过分析和光谱技术表征。单晶 X 射线衍射研究证实了钯离子周围的方形平面几何形状。使用 0.5 mol% Pd( II) 催化剂负载。催化偶联过程在有氧条件下进行,水是唯一的副产品。与来自对照实验的数据,脱氢偶联反应的可行的机制,提出了通过环状缩醛胺中间体通过醇氧化成醛。克级合成证明了所提出协议的有效性。
titanium dioxide nanotubes (TNTs) to get the QDs/TNTs composite photocatalysts. The QDs/TNTs composites were successfully applied to the cyclization reaction between arylamines and a series of aldehydes to give the corresponding N-heterocyclic compounds. The results show that the QDs/TNTs composite with the advantages of good catalytic activity, low cost, ease of recovering, and being able to be used for