Zinc (II) [tetra(4-methylphenyl)] Porphyrin: a Novel and Reusable Catalyst for Efficient Synthesis of 2,4,5-trisubstituted Imidazoles Under Ultrasound Irradiation
作者:Javad Safari、Shiva Dehghan Khalili、Sayed Hossein Banitaba、Hossein Dehghani
DOI:10.5012/jkcs.2011.55.5.787
日期:2011.10.20
An efficient three-component one-step synthesis of 2,4,5-trisubstituted imidazoles by condensation reaction of 1,2-diketones or α-hydroxyketones with aromatic aldehydes and ammonium acetate using Zinc (II) (tetra (4-methylphenyl)) porphyrin as a novel and reusable catalyst under ultrasound irradiation at ambient temperature is described. In this method, α-hydroxyketones as well as 1,2-diketones were
使用锌(II)(四(4-甲基苯基))使1,2-二酮或α-羟基酮与芳族醛和乙酸铵缩合反应,可有效地三步合成2,4,5-三取代的咪唑描述了在室温下超声辐射下卟啉作为新型可重复使用的催化剂。在这种方法中,α-羟基酮以及1,2-二酮以优异的产率转化为它们相应的2,4,5-三取代的咪唑。