Buscar
Mostrando ítems 1-10 de 810
Solvent free esterification reactions using Lewis acids in solid phase catalysis
(Elsevier B.V., 2006-10-04)
A clean, efficient and fast method for esterification reactions for sterically (biodiesels) or otherwise inactive (aromatic) precursors was developed, using catalysts supported in a solid phase under solvent free conditions, ...
Solvent free esterification reactions using Lewis acids in solid phase catalysis
(Elsevier B.V., 2006-10-04)
A clean, efficient and fast method for esterification reactions for sterically (biodiesels) or otherwise inactive (aromatic) precursors was developed, using catalysts supported in a solid phase under solvent free conditions, ...
Solvent-free heteropolyacid-catalyzed glycerol ketalization at room temperature
(Royal Society of Chemistry Advances, 2019)
Linear free energy relationship analysis of solvent effects on singlet oxygen reactions
(2003)
Linear solvation energy relationship, LSER, and theoretical linear solvation energy relationship, TLSER, formalisms are applied to the analysis of solvent effects on singlet oxygen reactions. Treatments allow quantitative ...
Solvent-Free Synthesis Using Nb2O5 and a Theoretical-Experimental Study of Solvent Effect in New Rhodamine Dyes
(Wiley-Blackwell, 2020-01-31)
Rhodamine dyes have several applications based on properties, such as high molar absorptivity, high fluorescence quantum yield, photostability, absorption and emission wavelengths in the visible region. In this paper, we ...
Solvent-Free Condensation Reactions to Synthesize Five-Member Heterocycles Containing the Sulphamide Fragment.
(Georg Thieme Verlag Kg, 2016-03)
We report a study of the solvent-free condensation reaction of 1,2-dicarbonyl compounds with sulfamide catalyzed by a Keggin-type acid (H3PMo12O40·nH2O, MPA) to obtain 3,4-disubstituted 1,2,5-thiadiazole 1,1-dioxide ...
Single-step synthesis of 4-phenyl and 3,4-dihydro-4-phenyl coumarins using a recyclable Preyssler heteropolyacid catalyst under solvent-free reaction conditions
(Springer, 2015-04-17)
4-Phenyl and 3,4-dihydro-4-phenylcoumarins were prepared by direct esterification
of phenols with phenylpropiolic and cinnamic acids, respectively, using a
compound with Preyssler structure (H14P5NaW30O110) (PA) as ...