高效,环保,可回收的异质ZnFe 2 O 4纳米催化合成2-氨基-4-取代的1,4-二氢苯并[4,5]咪唑并[1,2-a]嘧啶-3-腈(4a- j)通过苯并咪唑(1),取代的芳香醛(2a-j)和丙二腈(3)的一锅多组分反应的衍生物。这种合成方法的意义在于反应时间短,易于处理,简单,高效,高收率和可回收的催化剂。
three-component synthesis of 2-amino-4-substituted-1,4-dihydrobenzo[4,5]imidazolo[1,2-a]pyrimidine-3-carbonitrile derivatives by the reaction between various aldehydes with 2-aminobenzimidazole and malononitrile with an excellent output and in low-response period was studied in the presence of Ag–TiO2 nanocomposite as an efficient and recyclable catalyst undersolvent-freeconditions at 60 °C. The results
摘要通过各种醛与2-的反应,一锅三组分合成2-氨基-4-取代的1,4-二氢苯并[4,5]咪唑并[1,2 - a ]嘧啶-3-腈在无溶剂条件下于60°C的条件下,以Ag-TiO 2纳米复合材料作为有效和可回收的催化剂,研究了氨基苯并咪唑和丙二腈具有优异的产量和低响应时间。结果表明,所需产物的分离可通过简单过滤实现,并且Ag-TiO 2纳米复合材料可重复使用并连续重复使用。 图形摘要
Synthesis of substituted pyrimidine using
<scp>
ZnFe
<sub>2</sub>
O
<sub>4</sub>
</scp>
nanocatalyst via one pot multi‐component reaction ultrasonic irradiation
作者:Pravin Chavan、Sachin Bangale、Dattatraya Pansare、Rohini Shelke、Shivaji Jadhav、Shrikrushna Tupare、Dhanraj Kamble、Megha Rai
DOI:10.1002/jhet.4048
日期:——
highly efficient, eco‐friendly, recyclable heterogeneous ZnFe2O4 nanocatalyzed synthesis of 2‐amino‐4‐substituted 1,4‐dihydrobenzo[4,5]imidazo[1,2‐a]pyrimidine‐3‐carbonitrile (4a‐j) derivatives via one pot multicomponentreaction of benzimidazole (1), substituted aromatic aldehyde (2a‐j) and malononitrile (3) underultrasonicirradiations. Significance of this synthetic approach is short reaction time
高效,环保,可回收的异质ZnFe 2 O 4纳米催化合成2-氨基-4-取代的1,4-二氢苯并[4,5]咪唑并[1,2-a]嘧啶-3-腈(4a- j)通过苯并咪唑(1),取代的芳香醛(2a-j)和丙二腈(3)的一锅多组分反应的衍生物。这种合成方法的意义在于反应时间短,易于处理,简单,高效,高收率和可回收的催化剂。
Prasoona; Kishore; Brahmeshwari, Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, <hi>2020</hi>, vol. 59, # 4, p. 445 - 453