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Guo, Sheng ; Wu, Yifan ; Luo, Shao-Xiong Lennon , et al. ACS Appl. Nano Mater.,2022,5(12):18603-18611. DOI: 10.1021/acsanm.2c04393
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Abstract: Heterogenous catalysts with confined nanoporous catalytic sites are shown to have high activity and size selectivity. A solution-processable nanoporous organic polymer (1-BPy-Pd) catalyst displays high catalytic performance (TON > 200K) in the heterogeneous Suzuki–Miyaura coupling (SMC) reaction and can be used for the preparation of the intermediates in the synthesis of pharmaceutical agents. In comparison to the homogeneous catalyst analogue (2,2′-BPy)PdCl2, the heterogenous system offers size-dependent catalytic activity when bulkier substrates are used. Furthermore, the catalyst can be used to create catalytic impellers that simplify its use and recovery. We found that this system also works for applications in heterogenous Heck and nitroarenes reduction reactions. The metal-binding nanoporous polymer reported here represents a versatile platform for size-selective heterogeneous and recyclable catalysts.
Keywords: nanoporous organic polymer ; heterogeneous catalyst ; Suzuki?Miyaura coupling reaction ; size-selective reaction ; catalyst processing
Purchased from AmBeed: 128796-39-4 ; 10365-98-7 ; 98-80-6 ; 556-96-7 ; 171663-13-1 ; 71597-85-8 ; 402-43-7 ; 2042-37-7 ; 22385-77-9 ; 16419-60-6 ; 15862-18-7 ; 87199-15-3 ; 171408-84-7 ; 643-58-3 ; 591-50-4 ; 76911-73-4 ; 398-36-7 ; 14871-92-2 ; 5720-07-0 ; 945976-76-1 ; 366-18-7 ; 2920-38-9 ; 623-00-7 ; 24973-49-7 ; 588-59-0 ; 128796-39-4 ; 5723-93-3 ; 17057-88-4 ; 126485-55-0 ...More
CAS No. : | 171663-13-1 | MDL No. : | MFCD08703139 |
Formula : | C12H16BrNO2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | BSEVOUCZQOLENZ-UHFFFAOYSA-N |
M.W : | 286.17 | Pubchem ID : | 11033439 |
Synonyms : |
|
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P280-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302 | Packing Group: | N/A |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
86.5% | With potassium carbonate;(1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; In 1,4-dioxane; at 80℃; | Bis(pinacolato) diboron (588mg, 2.0 mmol), reactant (286 mg, 1.0 mmol), potassium carbonate (276 mg, 2.0 mmol) and PdC12(dppf)CH2Cl2 (25 mg, 0.03 mmol) were added to a reaction flask which was purged thoroughly with N2. 10ml of dried dioxane was added via syringe and the reaction was heated to 80 0C for overnight. After LC-MS showed the reaction was complete, the solution was then cooled to room temperature and filtered and concentrated. Purification by chromatography (0-10% EtOAc: hexane), giving 288 mg of product as a white solid, yield: 86.5%. m/z 334 (M+H+). |
83% | With dichloro(1,1'-bis(diphenylphosphanyl)ferrocene)palladium(II)*CH2Cl2; potassium acetate; In dimethyl sulfoxide; at 80℃; for 4h;Inert atmosphere; | In the three-neck flask was added Intermediate j (10mmol),Pinacol diborate (2.67g, 10.5mmol),Potassium acetate (2.9g, 30mmol), [1,1'-bis(diphenylphosphine)ferrocene]palladium dichloromethane complex (245mg, 0.3mmol), protected by nitrogen, Add 15mL of dimethyl sulfoxide, and react at 80 C for 4 hours. Water was added after cooling, extraction with ethyl acetate, washing with saturated brine, and drying with anhydrous sodium sulfate. Column chromatography was used to obtain 2.76 g of intermediate k as a white solid |
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