Preparation method and application of a class of porous organic polymers containing pyridine groups
A pyridine group, polymer technology, applied in the field of porous polymers and their preparation, porous organic polymers, can solve the problems of difficult recycling of catalysts, low catalyst activity, etc., achieve high catalytic activity and recyclability, preparation method Simple, high-yield effects
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Embodiment 1
[0030] Tris (4-vinylphenyl) phosphine used in the following examples is prepared by the following method, specifically:
[0031] Tris(4-vinylphenyl)phosphine preparation of
[0032] Magnesium (160mg, 1.2mmol) was cut into small pieces and placed in a three-necked flask that had been dried and connected to a constant pressure dropping funnel, and one piece of iodine was added, and the reaction system was sealed and replaced with a nitrogen system to ensure that there was no water in the system. oxygen. Add 4-bromostyrene (0.7mL, 1mmol) into the constant pressure dropping funnel, and add 20mL of anhydrous tetrahydrofuran. Slowly drop the mixed liquid in the constant pressure dropping funnel into the flask, heat and stir for 1 hour. The reaction system was transferred to an ice-water bath, phosphorus trichloride (0.15 mL, 0.3 mmol) was slowly added thereto with a syringe, and stirred overnight. After stirring overnight, add saturated ammonium chloride aqueous solution and ex...
Embodiment 2
[0034] Synthesis of Polymer I
[0035] Under a nitrogen atmosphere, anhydrous tetrahydrofuran (10.0 mL) was added to a 50 mL stopcock bottle, and the copolymerization unit (570.0mg, 1.68mol) and (35.3mg, 0.34mmol), and finally 5.0mg of initiator AIBN was added. After stirring at room temperature for 10 min, react at 100°C for 24 h, the product was separated by centrifugation, washed with tetrahydrofuran (3×6 mL) and rotary evaporated to give a light yellow solid (590.0 mg).
Embodiment 3
[0037] Synthesis of Porous Organic Polymer I Supported Ruthenium Catalyst Rh / I with Pyridine Groups as follows
[0038] Into a 100mL Schlenk tube, add (500.0 mg), RuCl 3 (71.8mg) and anhydrous tetrahydrofuran (8mL). After stirring at room temperature for 24 h, the reaction product was washed with anhydrous toluene and then centrifuged, and thus centrifuged three times. Finally, the toluene was removed by rotary evaporation under reduced pressure, and the oil pump was used for 3 h to obtain the catalyst Rh / I (570 mg).
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