One-pot synthesis of 2,3-dihydroquinazolin-4(1H)-ones by Fe3O4@SiO2-imid-PMAn nano-catalyst under ultrasonic irradiation and reflux conditions
作者:Mohsen Esmaeilpour、Jaber Javidi、Saeed Zahmatkesh、Nafiseh Fahimi
DOI:10.1007/s00706-016-1832-5
日期:2017.5
corresponding 2,3-dihydroquinazolin-4(1H)-one derivatives under ultrasonic irradiation or reflux conditions. This method gives notable advantages such as operational simplicity, excellent yields, short reaction times, and absence of any tedious workup or purification. In addition, the excellent catalytic performance and the easy preparation, thermal stability, and separation of the catalyst make it
摘要Fe 3 O 4 @SiO 2-亚胺基-PMA n有效催化异戊酸酐,醛,伯胺或铵盐的缩合反应,得到相应的2,3-二氢喹唑啉-4(1 H)-在超声波辐射或回流条件下的一种衍生物。该方法具有显着的优点,例如操作简便,产率高,反应时间短以及无需任何繁琐的后处理或纯化。另外,优异的催化性能以及催化剂的易于制备,热稳定性和分离使其成为良好的非均相体系,并且是其他非均相催化剂的有用替代品。同样,上述纳米催化剂可以容易地通过磁场回收,并且至少在六次后用于后续反应而不会明显降低催化活性和反应产率。 图形概要