Synthesis and characterization of fluconazole-functionalized magnetic nanoparticles as a catalyst for the synthesis of 3-aryl and 3-amino-imidazo[1,2-a]pyridines
Fluconazole immobilised on modified Fe3O4–SiO2 core–shell nanoparticles was synthesised, characterised and used as a catalyst in synthesis of 3-aryl and 3-amino-imidazo[1,2-a]pyridines.
Imidazoazines have been synthesized by a one-potthree-component condensation reaction of an aldehyde, a 2-aminoazine and an isocyanide in the presence of the cellulose sulfuric acid, as an effective bio-supported catalyst in excellent yields. The reaction work-up is simple and the catalyst can be easily separated from the product and reused in several times.
A facile, efficient and environment-friendly protocol for the synthesis of 3-aminoimidazo[1,2-a]pyridines has been developed by one-pot condensation of 2-aminopyridine, aromatic aldehyde and alkyl or aryl isocyanide in the presence of P2O5 as catalyst under solvent-free conditions at room temperature. The present approach offers the advantages of clean reaction, simple methodology, short reaction time, high yield, easy purification, and economic availability of the catalyst.
Ionic liquid promoted one-pot synthesis of 3-aminoimidazo[1,2-a]pyridines
作者:Ahmad Shaabani、Ebrahim Soleimani、Ali Maleki
DOI:10.1016/j.tetlet.2006.03.011
日期:2006.5
3-Aminoimidazo[1,2-a]pyridines have been synthesized in good to excellent yields in the presence of the ionicliquid 1-butyl-3-methylimidazolium bromide [bmim]Br, the reaction workup is simple and the ionicliquid can be easily separated from the product and reused.
在离子液体溴化1-丁基-3-甲基咪唑鎓溴化[bmim] Br的存在下,合成了3-氨基咪唑并[1,2- a ]吡啶,收率好至极好,反应后处理简单,离子液体可以易于与产品分离并重复使用。
Metal-organic framework of amine-MIL-53(Al) as active and reusable liquid-phase reaction inductor for multicomponent condensation of Ugi-type reactions
作者:Sadegh Rostamnia、Maryam Jafari
DOI:10.1002/aoc.3584
日期:2017.4
be active in the Groebke–Blackburn–Bienaymé multicomponent coupling reaction based on Ugi‐type amine and aldehyde condensation over isocyanide and then a cyclization process. Interestingly this reaction occurred under solvent‐free conditions with high yield, in which the NH2‐MIL‐53(Al) could be recovered and reused for five reaction cycles, giving a total turnover number of 455.