Background and overview of preparation and application of (triphenylene-2-yl)boronic acid pinacol ester
(Triphenylene-2-yl)pinacol borate is an organic intermediate that can be used to prepare high-performance electron transport materials. This type of material has high electron mobility to improve the luminous efficiency and service life of the device.
Preparation and application of (triphenylene-2-yl)boronic acid pinacol ester
Dissolve 0.1 mol of 2-bromobenzo[9,10]phenanthrene in 250 ml of sodium perborate tetrahydrate and 1,4-dioxane trichloropyridine ring solvent, add nitrogen and stir, and add 0.1 mol in turn Pinacol borate, 0.25 mol of potassium acetate, and 0.001 mol of [1,1′-bis(diphenylphosphino)ferrocene]palladium dichloride were heated to reflux. After 6 hours, HPLC detected the basic reaction of the raw materials. After completion, the reaction solution was evaporated under reduced pressure, and the residue was subjected to column chromatography to obtain the intermediate (triphenylene-2-yl)borate pinacol ester (yield: 79%).
Preparation and application of (triphenylene-2-yl)boronic acid pinacol ester
(Triphenylene-2-yl)boronic acid pinacol ester can be used to prepare compound 1, which is an electron transport material with high electron mobility to improve the luminous efficiency and service life of the device. Compound 1 can adjust the range of LUMO energy levels to achieve a high degree of matching with the energy levels of adjacent material layers, which can reduce the electron injection barrier, thereby reducing the driving voltage and improving luminous efficiency.
References
[1] [Chinese invention] CN202010238346.0 An organic compound and its application, an organic electroluminescent device
