A novel magnetically recyclable silver-loaded cellulose-based bionanocomposite catalyst for green synthesis of tetrazolo[1,5-a]pyrimidines
作者:Ali Maleki、Parisa Ravaghi、Morteza Aghaei、Hamed Movahed
DOI:10.1007/s11164-017-2941-4
日期:2017.10
5-Methyl-7-aryl-4,7-dihydrotetrazolo[1,5-a]pyrimidine-6-carboxylic ester derivatives were efficiently synthesized by reaction of methyl or ethyl acetoacetate, 5-aminotetrazole (produced from 2-cyanoguanidine and sodium azide), and various aromatic aldehydes in presence of a new cellulose-based Ag-loaded magnetic bionanostructure. This protocol offers many advantages such as short reaction time, high
通过乙酰乙酸甲酯或乙酸乙酯,5-氨基四唑(由2-氰基胍和叠氮化钠制得)有效合成5-甲基-7-芳基-4,7-二氢四唑[1,5- a ]嘧啶-6-羧酸酯衍生物)和各种芳族醛,并存在新的基于纤维素的银负载磁性生物纳米结构。该方案具有许多优点,例如反应时间短,收率高,纳米复合材料具有显着的磁性,并且易于从反应混合物中分离出纳米催化剂,而不会显着降低催化活性。此外,X射线衍射分析,场发射扫描电子显微镜和能量色散X射线(EDX)分析被用来表征制备的纳米催化剂。