Synthesis and characterization of VO–vanillin complex immobilized on MCM‐41 and its facile catalytic application in the sulfoxidation reaction, and synthesis of 2,3‐dihydroquinazolin‐4(1
<i>H</i>
)‐ones and disulfides in green media
作者:Mohsen Nikoorazm、Maryam Khanmoradi
DOI:10.1002/jccs.201900531
日期:2020.8
as a green oxidant) and also a suitable catalyst for the preparation of 2,3‐dihydroquinazolin‐4(1H )‐one derivatives in water at 90°C. Using this protocol, we show that a variety of disulfides, sulfoxides, and 2,3‐dihydroquinazolin‐4(1H )‐one derivatives can be synthesized in green conditions. The catalyst can be recovered and recycled for further reactions without appreciable loss of catalytic performance
在这项工作中,将香兰素复合物固定在MCM-41上,并通过FT-IR,X射线衍射,扫描电子显微镜,能量色散光谱,热重分析和BET技术进行表征。发现这种担载的席夫碱配合物是一种有效且可回收的催化剂,可用于将硫化物化学选择性氧化为亚砜和硫醇使其相应的二硫化物(使用过氧化氢作为绿色氧化剂),也是制备2,3-的合适催化剂。90°C水中的二氢喹唑啉-4(1 H)-1衍生物。使用此协议,我们显示了各种二硫化物,亚砜和2,3-二氢喹唑啉-4(1 H)-一种衍生物可以在绿色条件下合成。催化剂可以回收并循环用于进一步的反应,而不会明显降低催化性能。