开发了一种合成新型聚合物多孔交联聚(亚乙基胺)-聚磺酰胺(PEA-PSA)的有效途径,作为固定化 CuI 纳米颗粒(PEA-PSA@CuI)的有机载体。所得催化剂可作为一种有效的可回收多相催化剂,用于由 2-氨基吡啶、醛和苯乙炔的反应合成咪唑并[1,2-a]吡啶。该方法具有显着的优点,包括:易于纯化、官能团耐受性、催化剂的可回收性以及以高产率和短反应时间合成新衍生物。图形摘要
Peptide Nanofiber Templated Zinc Oxide Nanostructures as Non-precious Metal Catalyzed N-Arylation of Amines, One-Pot Synthesis of ImidazoHeterocycles and Fused Quinazolines
the method was investigated by N-arylation using reaction of amines with hydroxybenzotriazole as a novel phenylating reagent, one-pot synthesis of imidazoheterocycles by a three-component reaction of 2-aminopyridine, aldehyde, terminal alkyne and preparation of tetracyclic quinazolinone ring by one-pot reaction of isatoic anhydride, amine, and ninhydrin. High yields, low cost of catalyst, environmental
Mechanistic Studies on a New Catalyst System (CuI-NaHSO4×SiO2) Leading to the One-Pot Synthesis of Imidazo[1,2-a]pyridines from Reactions of 2-Aminopyridines, Aldehydes, and Terminal Alkynes
作者:Rina Ghosh、Sarita Mishra
DOI:10.1055/s-0030-1260255
日期:2011.11
One-pot reactions of aldehydes, 2-aminopyridines, and terminal alkynes, in the presence of the copper(I) iodide-NaHSO4˙SiO2 combination catalyst in refluxing toluene, generate the corresponding imidazo[1,2-a]pyridines in high to excellent yields; the mechanism has been studied. CuI-NaHSO4˙SiO2 - one-pot synthesis - imidazo[1,2-a]pyridine - 2-aminopyridine - cascade reaction
Synthesis of imidazo[1,2a]pyridines via three-component reaction of 2-aminopyridines, aldehydes and alkynes
作者:Ping Liu、Li-song Fang、Xinsheng Lei、Guo-qiang Lin
DOI:10.1016/j.tetlet.2010.05.139
日期:2010.9
A novel three-component reaction towards the synthesis of imidazo[1,2a]pyridines was independently developed based on 2-aminopyridines, aldehydes and alkynes, and thereby imidazo[1,2a]pyridines were obtained in acceptable yields by the CuSO4/TsOH catalyzed three-component reaction.
An efficient route was developed for the synthesis of a new polymer, porous cross-linked poly(ethyleneamine)-polysulfonamide (PEA-PSA), as an organic support for the imobilization of CuI nanoparticles (PEA-PSA@CuI). The resulting catalyst works as an efficient recyclable heterogeneous catalyst for the synthesis of imidazo[1,2- a ] pyridines from the reaction of 2-aminopyridine, aldehydes and phenylacetylene
开发了一种合成新型聚合物多孔交联聚(亚乙基胺)-聚磺酰胺(PEA-PSA)的有效途径,作为固定化 CuI 纳米颗粒(PEA-PSA@CuI)的有机载体。所得催化剂可作为一种有效的可回收多相催化剂,用于由 2-氨基吡啶、醛和苯乙炔的反应合成咪唑并[1,2-a]吡啶。该方法具有显着的优点,包括:易于纯化、官能团耐受性、催化剂的可回收性以及以高产率和短反应时间合成新衍生物。图形摘要