Methanesulfonic Acid-Catalyzed One-Pot Synthesis of 12-Aryl-or 12-Alkyl--8,9,10,12-tetrahydrobenzo[a]xanthen-11-one Derivatives -[via condensation of various aldehydes, 2-naphthol, and cyclic 1,3-dicarbonyl compounds under mild and solvent-free conditions]. -(LIU*, Y.-H.; LI, L.; J. Heterocycl. Chem. 49 (2012) 4, 861-864, http://dx.
Pyrroles. -A deep eutectic solvent based on choline chloride and malonic acid is used as a dual catalyst and green reaction medium for the synthesis of a wide range of functionalized pyrroles by four-component reaction of various amines, aldehydes, 1,3-dicarbonyl compounds, and nitromethane. The solvent is reusable three times without significant loss of activity. -(HU, H.-C.; LIU, Y.-H.; LI, B.-L.; CUI, Z.-S.; ZHANG*, Z.-H.; RSC Adv. 5 (2015) 10, 7720-7728, http://dx.
NbCl5 catalyzes the synthesis of enaminones and enamino esters from the corresponding 1,3‐dicarbonyl compounds and primary amines under solvent‐free conditions.
The triazoles are synthesized from sodium azide, non-activated terminal alkynes, different azide precursors such as epoxides, benzyl chlorides, and aryl boronic acids at room temperature in water in high yields with wide substrate scopes. The catalyst can be easily separated using an external magnet and reused for 10 cycles without significant loss of the catalytic activity. -(LU, J.; MA, E.-Q.; LIU, Y.-H.; LI, Y.-M.; MO, L.-P.; ZHANG*, Z.-H.; RSC Adv. 5 (2015) 73, 59167-59185, http://dx.
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