Microwave acceleration of the Pechmann reaction on graphite/montmorillonite K10: application to the preparation of 4-substituted 7-aminocoumarins

Facile iron(III) chloride hexahydrate catalyzed synthesis of coumarins

“…Various protocols have been developed by using different catalysts including sulfuric acid, 20 trifluoroacetic acid, 21 phosphorus pentaoxide, 22 aluminium chloride, [23][24] indium(III) chloride, 25 titanium(IV) chloride, 26 silica gel supported zirconyl chloride octahydrate, 27 samarium(III) nitrate hexahydrate, 28 bismuth(III) nitrate pentahydrate, 29 ionic liquids 30 and many more. [31][32][33] However, the development of practical, efficient and environmentally benign synthetic protocols for the synthesis of coumarins is greatly desirable.…”

Synthesis and Application of Nanocrystalline-Cellulose-Supported Acid Ionic Liquid Catalyst in Pechmann Reaction

“…It was found that solvent-free condition stands out as the choice, with its fast conversion, high yield, and no side product, such as chromones formation [30,31].…”

Shikimic Acid Pathway

“…VI. An efficient synthesis of 7-aminocoumarins was carried out by microwave irradiation on the reactants (m-aminophenol and methyl-2-ketosuccinate) on solid support (graphite/montmorillonite K10) [26] (Fig. 13.32).…”