摘要通过原位制备Fe 3 O 4纳米颗粒并将其沉积在纤维素上,提供了负载在纤维素上的Fe 3 O 4纳米颗粒作为催化剂。经TEM和FAAS分析表征后,该催化剂用作合成嘧啶并[4,5- b ]喹啉的有效多相催化剂。各种芳香醛,6-氨基-1,3-二甲基尿嘧啶和二甲酮或1,3-环己二酮在作为绿色溶剂的H 2 O中于回流条件下在三小时后进行三组分反应,得到嘧啶基[4,5- b ]喹啉产量高。铁3 O 4 将负载在纤维素上的载体在反应中循环5个循环,而活性没有明显降低。 图形概要
An Efficient synthesis of pyrimido[4,5-<i>b</i>]quinoline and indeno[2′,1′:5,6]pyrido[2,3-<i>d</i>]pyrimidine derivatives via multicomponent reactions in ionic liquid
作者:Shun-Jun Ji、Sai-Nan Ni、Fang Yang、Jing-Wen Shi、Guo-Lan Dou、Xiao-Yue Li、Xiang-Shan Wang、Da-Qing Shi
DOI:10.1002/jhet.5570450310
日期:2008.5
A series of pyrimido[4,5-b]quinoline and indeno[2′,1′:5,6]pyrido[2,3-d]pyrimidine derivatives were synthesized via the three-component reaction of an aldehyde, 6-aminopyrimidine-2,4-dione and 5,5-dimethyl-1,3-cyclohexanedione or 1,3-indanedione in ionic liquid 1-n-butyl-3-methylimidazolium bromide ([bmim]Br). This protocol has the advantages of easier work-up, milder reaction conditions, high yields