An efficient and inexpensive sulfated polyborate catalyst was applied for the rapid synthesis
of quinoxaline derivatives from various substituted o-phenylenediamines and 1, 2 …

Silica-supported bismuth (III) chloride (BiCl3/SiO2) acts as as a highly efficient
heterogeneous Lewis acid catalyst for the Paal–Knorr pyrrole synthesis in hexane at room …

A series of thienopyrazine-based donor–acceptor–donor (D–A–D) near-infrared (NIR)
fluorescent compounds were synthesized through a rapid, palladium-catalyzed C–H …

Fe3O4@ SiO2/Schiff base complex of metal ions catalyzed the reaction between phenylene-
1, 2-diamines and 1, 2-diketones to produce quinoxalines in aqueous media at room …

Efficient, green, and straightforward synthesis of 3, 4-dihydropyrimidine-2 (1 H)-one/thione
derivatives under favorable conditions has been achieved by reaction of urea/thiourea …

A highly efficient and general method for the synthesis of polyfunctionalized 4H-pyrans is
established through a one-pot multicomponent cyclocondensation of aromatic aldehydes …

An efficient, simple, and green procedure for the synthesis of quinoxaline derivatives
catalyzed by Fe 3 O 4@ SiO 2–imid–PMA n nanoparticles at room temperature is described …

Quinoxaline derivatives are a very important class of nitrogen-containing compounds and
have been widely used in dyes [1], pharmaceuticals [2, 3], and electrical/photochemical …

The one-pot reduction-cyclization of 2-nitroanilines and 1, 2-diketones to give quinoxalines
was investigated. Using indium and an appropriate acid such as acetic acid or indium (III) …

Heterogeneous catalysts are used for control of environmental pollution. Heterogeneous
catalysts are easily separated from the reaction mixture, thus allowing their recovery and re …