A kind of trifluoromethyl quinoline cadmium complex tetramer and its preparation method and application
A technology of cadmium trifluoromethylquinoline and trifluoromethyl, which is applied in the field of tetramer containing trifluoromethylquinoline cadmium complex and its preparation, can solve the problem of not being able to meet large-scale production and reduce OLED production costs, etc. problems, achieve broad commercialization prospects, good thermal stability, and reduce costs
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[0055] (1) Preparation of intermediate (E)-2-[2-(2-trifluoromethyl)vinyl]-8-acetoxyquinoline:
[0056] A, take by weighing 8-hydroxyquinaldine (0.68g 4.25mmol) and o-trifluoromethylbenzaldehyde (0.72g, 4.13mmol), be dissolved in the acetic anhydride of 15ml;
[0057] B, the mixed solution obtained in step A is placed in a 50mL two-necked round-bottomed flask, magnetically stirred under the protection of nitrogen, and heated to reflux for 20 h;
[0058] C, after the heating and reflux reaction finishes, cool to room temperature, pour the reaction solution into 800mL of ice water, filter when solids are precipitated, extract the filtrate three times with dichloromethane, and combine the organic phases obtained by the three extractions;
[0059] D. Wash away the acetic acid in the organic phase with distilled water, dry it with anhydrous sodium sulfate, evaporate the solvent under reduced pressure to obtain the crude product, and use ethyl acetate / petroleum ether with a mass rati...
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