The aerobic oxidation of alcohols and synthesis of quinoxalines was developed in a one-pot biomimetic approach using recyclable ruthenium on charcoal and randomly methylated β-cyclodextrin in water under neutral conditions overcoming many of the drawbacks in the earlier methodologies. The catalytic system can be recycled up to five cycles without loss of activity.
Polystyrene-supported AlCl3 as a highly active and reusable heterogeneous lewis acid catalyst for the one-pot synthesis of quinoxalines
作者:Ali Rahmatpour
DOI:10.1002/hc.21039
日期:——
environmentally benign protocol for the synthesis of quinoxaline derivatives through the condensation reactions of 1,2-diketones and 1,2-phenylenediamines using cross-linked polystyrene-supported aluminum chloride (PS/AlCl3) as a highlyactive and reusableheterogeneous Lewis acid catalyst is described. This polymeric catalyst is stable and can be easily recovered and reused without appreciable change in its
An Efficient and Green Procedure for the Synthesis of Quinoxaline Derivatives using 3,5-Bis(trifluoromethyl)phenylammonium triflate (BFPAT) Organocatalyst
The application of 3,5-bis(trifluoromethyl)phenylammonium triflate (BFPAT) as a convenient new organocatalyst for the synthesis of quinoxaline derivatives is described. In the presence of BFPAT, one-pot synthesis of a wide variety of quinoxaline derivatives was achieved by the reaction of various o-phenylenediamines and 1,2-dicarbonyl compounds in water.
Pentafluorophenylammonium triflate: A highly efficient catalyst for the synthesis of quinoxaline derivatives in water
作者:Samad Khaksar、Hanieh Radpeyma
DOI:10.1016/j.crci.2013.11.009
日期:2014.10
Résumé A simple, inexpensive, environmentally friendly and efficient route for the rapid and efficient synthesis of quinoxaline derivatives using pentafluorophenylammonium triflate (PFPAT) as a catalyst is described. Various quinoxaline derivatives were synthesized in good to excellent yields. The preparation of PFPAT catalyst from simple and readily available starting materials makes this method more affordable.
Metal Hydrogen Sulfates M(HSO<sub>4</sub>)<sub>n</sub>: As Efficient Catalysts for the Synthesis of Quinoxalines in EtOH at Room Temperature
作者:Khodabakhsh Niknam、Mohammad Ali Zolfigol、Ziba Tavakoli、Zahra Heydari
DOI:10.1002/jccs.200800206
日期:2008.12
A convenient method for the synthesis of quinoxalines catalysed by metalhydrogensulfates by the reaction of 1,2-diamino compounds and 1,2-dicarbonyl compounds in ethanol as solvent at roomtemperature is reported.