A new pathway to pyrrolo[1,2-a]quinoxalines via solvent-free one-pot strategy utilizing FeMoSe nanosheets as efficient recyclable synergistic catalyst
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Catalysis"
DOI: 10.1016/j.jcat.2019.07.008
Abstract: Abstract FeMoSe nanocatalyst was synthesized using solvothermal approach from readily available precursors, namely Mo(CO)6, FeSO4 and Se, and characterized by spectroscopic and microscopic analyses. The FeMoSe material offered high catalytic activity in the synthesis of… read more here.
Keywords: quinoxalines via; via solvent; free one; pyrrolo quinoxalines ... See more keywords
Cu-catalyzed direct C1−H difluoromethylation of pyrrolo[1,2-a]quinoxalines
Sign Up to like & getrecommendations! Published in 2021 at "Molecular Catalysis"
DOI: 10.1016/j.mcat.2021.111747
Abstract: Abstract An efficient Cu-catalyzed direct C1−H difluoromethylation of pyrrolo[1,2-a]quinoxalines with BrCF2CO2Et or BrCF2CONEt2 has been reported, providing to a series of difluoromethylated pyrrolo[1,2-a]quinoxalines with generally good yields. This approach features good compatibility with substituents, broad… read more here.
Keywords: difluoromethylation pyrrolo; pyrrolo quinoxalines; catalyzed direct; direct difluoromethylation ... See more keywords
Development of an unexpected reaction pathway for the synthesis of 1,2,4-trisubstituted pyrrolo[1,2-a]quinoxalines through palladium-catalyzed cascade reactions
Sign Up to like & getrecommendations! Published in 2017 at "Tetrahedron"
DOI: 10.1016/j.tet.2017.02.018
Abstract: Abstract 1,2,4-trisubstituted pyrrolo[1,2-a]quinoxalines are synthesized through the multi-component reaction of 3-substituted 2-chloroquinoxalines, propargyl bromide, and excess secondary amines in the presence of a palladium copper catalytic system. This one-pot process provides an unexpected synthesis of… read more here.
Keywords: trisubstituted pyrrolo; development unexpected; reaction; palladium ... See more keywords
Elemental Sulfur Mediated Synthesis of Pyrrolo[1,2-a]quinoxalines from 1-(2-Nitroaryl)pyrroles
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DOI: 10.1055/a-1534-0466
Abstract: Methods to afford pyrrolo[1,2-a]quinoxalines often require the use of prefunctionalized aniline precursors, transition metals, and/or harsh conditions. Herein we describe a simple coupling of 1-(2-nitroaryl)pyrroles and arylacetic acids, in the presence of elemental sulfur, to… read more here.
Keywords: pyrrolo quinoxalines; elemental sulfur; nitroaryl pyrroles; sulfur mediated ... See more keywords