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Critical assessment of the efficiency of chitosan biohydrogel beads as recyclable and heterogeneous organocatalyst for C-C bond formation

AuthorsDíaz Díaz, David
Issue Date2012
PublisherRoyal Society of Chemistry (UK)
CitationGreen Chemistry 14(2): 378-392 (2012)
AbstractThe effectiveness of neutral pH chitosan hydrogel beads (CSHB) as a green organocatalyst for a variety of C-C bond forming reactions (i.e. aldol reaction, Knoevenagel condensation, nitroaldol (Henry) reaction, Michael addition) has been comprehensively evaluated. Reaction rates, conversions and selectivities were studied as a function of a series of input variables including size, pH and reactive surface area of the beads, catalyst loading, temperature, molecular weight of the biopolymer, concentration, solvent system and molar ratio of reactants. Moreover, the catalytic biohydrogel beads were characterized by a variety of techniques including, among others, SEM, FT-IR, TGA and DSC. © 2012 The Royal Society of Chemistry.
DescriptionEl pdf del artículo es la versión post-print.-- et al.
Publisher version (URL)http://dx.doi.org/10.1039/C1GC15925A
Identifiersdoi: 10.1039/C1GC15925A
issn: 1463-9262
e-issn: 1463-9270
Appears in Collections:(ISQCH) Artículos
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