Coordinating Zirconium Nodes in Metal-Organic Framework with Trifluoroacetic Acid for Enhanced Lewis Acid Catalysis
Wenyang Wang , Hanlin Liu , Caoyu Yang , Ting Fan , Chengqian Cui , Xiaoquan Lu , Zhiyong Tang , Guodong Li
Chemical Research in Chinese Universities ›› 2022, Vol. 38 ›› Issue (5) : 1301 -1307.
Coordinating Zirconium Nodes in Metal-Organic Framework with Trifluoroacetic Acid for Enhanced Lewis Acid Catalysis
Regulating Lewis acid sites with well-defined electronic state and steric environment is still challenging for achieving high catalytic efficiency. Here we show coordinating zirconium nodes in the typical metal-organic framework known as MOF-545 with the monocarboxylate modulators including trifluoroacetic acid(TFA) or benzoic acid(BA) over meso-tetra(4-carboxyphenyl)-porphine(H2TCPP), denoted as MOF-545-TFA or MOF-545-BA. Impressively, MOF-545-TFA shows the significantly enhanced performance for the catalytic ring-opening reaction of various epoxides with alcohols and good recyclability at 40 °C in respect with MOF-545-BA and ZrO2. This mainly originates from the stronger Lewis acidity and more active zirconium sites induced by the electron-withdrawing TFA, resulting in the increased ability for activation of epoxides. This modulation approach is promising for enlarging the toolbox to extend the MOFs-based Lewis acid catalysis.
Metal-organic framework / Active zirconium site / Trifluoroacetic acid / Epoxide ring-opening / Modulator effect
| [1] |
|
| [2] |
|
| [3] |
|
| [4] |
|
| [5] |
|
| [6] |
|
| [7] |
|
| [8] |
|
| [9] |
|
| [10] |
|
| [11] |
|
| [12] |
|
| [13] |
|
| [14] |
|
| [15] |
|
| [16] |
|
| [17] |
|
| [18] |
|
| [19] |
|
| [20] |
|
| [21] |
|
| [22] |
|
| [23] |
|
| [24] |
|
| [25] |
|
| [26] |
|
| [27] |
|
| [28] |
|
| [29] |
|
| [30] |
|
| [31] |
|
| [32] |
|
| [33] |
|
| [34] |
|
| [35] |
|
| [36] |
|
| [37] |
|
| [38] |
|
| [39] |
|
| [40] |
|
| [41] |
|
| [42] |
|
| [43] |
|
| [44] |
|
| [45] |
|
| [46] |
|
| [47] |
|
| [48] |
|
| [49] |
|
| [50] |
|
| [51] |
|
| [52] |
|
| [53] |
|
| [54] |
|
| [55] |
|
| [56] |
|
| [57] |
|
/
| 〈 |
|
〉 |