کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6455850 | 1419765 | 2016 | 10 صفحه PDF | دانلود رایگان |
- Synthesis of azolium based MOF.
- Design of efficient heterogeneous NHC catalyst.
- Knoevenagel condensation reaction by NHC catalyst MOF.
- The use of Pd(II)-NHC-MOF for Sonogashira cross-coupling.
A new heterogeneous NHC catalyst (1-Pd) was obtained by the post-synthetic modification of an azolium-containing metal-organic framework (1) which was synthesized by solvothermal reaction of 1,3-bis(4-carboxyphenyl)imidazolium chloride (H2L+Clâ) and Zn(NO3)2·6H2O. This new material, 1-Pd, was characterized by PXRD, TGA, SEM, TEM, 1H and 13C NMR, FTIR and XPS measurements. This catalyst exhibited an excellent activity for both Sonogashira cross-coupling and Knoevenagel condensation reaction retaining its catalytic and uniform distribution of the active sites, palladium (II) anchored on N-heterocyclic carbene (NHC-Pd(II)), for at least four cycles without losing its structural integrity.
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Journal: Journal of Catalysis - Volume 344, December 2016, Pages 445-454