Language:

1D Zn(II) Coordination Polymers as Effective Heterogeneous Catalysts in Microwave-Assisted Single-Pot Deacetalization-Knoevenagel Tandem Reactions in Solvent-Free Conditions

Paul, Anup ; Karmakar, Anirban ; Guedes da Silva, M. Fátima C. ; Pombeiro, Armando J. L.

Catalysts, 2021-01, Vol.11 (1), p.90 [Peer Reviewed Journal]

Basel: MDPI AG

Full text available

Citations Cited by

Actions
1. Add to e-Shelf
2. Remove from e-Shelf
3. E-mail
4. Print
5. Permalink
6. Citation
7. EasyBib
8. EndNote
9. RefWorks
10. Delicious
11. Export RIS
12. Export BibTeX

Title:
1D Zn(II) Coordination Polymers as Effective Heterogeneous Catalysts in Microwave-Assisted Single-Pot Deacetalization-Knoevenagel Tandem Reactions in Solvent-Free Conditions
Author: Paul, Anup ; Karmakar, Anirban ; Guedes da Silva, M. Fátima C. ; Pombeiro, Armando J. L.
Subjects: Acids ; Carboxylic acids ; Cascade chemical reactions ; Catalysis ; Catalysts ; Chemical reactions ; Coordination polymers ; Crystal structure ; Ethane ; heterogeneous catalyst ; Hydrogen bonding ; Ligands ; microwave ; Polymers ; Recyclability ; Single crystals ; solvent-free ; Solvents ; Stability analysis ; Symmetry ; tandem reactions ; Thermal stability ; Thermogravimetric analysis ; Topology ; X ray powder diffraction ; X-ray diffraction
Is Part Of: Catalysts, 2021-01, Vol.11 (1), p.90
Description: The new 1D CPs [Zn(L1)(H2O)4]n.nH2O (1) and [Zn(L2)(H2O)2]n (2) [L1 = 1,1′-(ethane-1,2-diyl)bis(6-oxo-1,6-dihydropyridine-3-carboxylic acid); L2 = 1,1′-(propane-1,3-diyl)bis(6-oxo-1,6-dihydropyridine-3-carboxylic acid)] were prepared from flexible dicarboxylate pro-ligands (H2L1 and H2L2). Both CPs 1 and 2 were characterized by elemental, FTIR, and powder X-ray diffraction analysis. Their geometry and the structural features were unveiled by single-crystal X-ray diffraction analysis. The underlying topology of the CPs was illustrated by the topological analysis of the H-bonded structure of CP 1, which revealed a 3,4,6-connected trinodal net. On the other hand, topological analysis on the hydrogen-bonded network of CP 2 showed a 2,3,3,4,6,7-connected hexanodal net. The thermal stability of the CPs was investigated by thermogravimetric analysis. CPs 1 and 2 act as heterogeneous catalysts in one-pot tandem deacetalization–Knoevenagel condensation reactions under environmentally mild conditions. CPs 1 exhibits a yield of ca. 91% in a microwave-assisted solvent-free medium, whereas a slightly lower yield was obtained for CP 2 (87%) under the same experimental protocol. The recyclability of catalyst 1 was also assessed. To our knowledge, these are the first Zn(II)-based CPs to be applied as heterogeneous catalysts for the above tandem reactions under environmentally friendly conditions.
Publisher: Basel: MDPI AG
Language: English

Back to results list

Previous Result 7 Next Go to Next page

Implemented by: Social Network Logos:

1D Zn(II) Coordination Polymers as Effective Heterogeneous Catalysts in Microwave-Assisted Single-Pot Deacetalization-Knoevenagel Tandem Reactions in Solvent-Free Conditions

Paul, Anup ; Karmakar, Anirban ; Guedes da Silva, M. Fátima C. ; Pombeiro, Armando J. L.

Basel: MDPI AG

Searching Remote Databases, Please Wait