Kuehbeck, Dennis and Saidulu, G. and Reddy, K. Rajender and Diaz Diaz, David (2012) Critical assessment of the efficiency of chitosan biohydrogel beads as recyclable and heterogeneous organocatalyst for C-C bond formation. GREEN CHEMISTRY, 14 (2). pp. 378-392. ISSN 1463-9262, 1463-9270
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The 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.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ASYMMETRIC ALDOL REACTION; HENRY REACTION; KNOEVENAGEL CONDENSATION; HYDROXYNITRILE LYASE; GREEN CHEMISTRY; CATALYST; WATER; CHITIN; ACETYLATION; SOLVENT; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Organische Chemie > Arbeitskreis Prof. Dr. David Díaz Díaz |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 25 May 2020 08:59 |
| Last Modified: | 25 May 2020 08:59 |
| URI: | https://pred.uni-regensburg.de/id/eprint/19552 |
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