Organic electroluminescent device comprising an electron buffer layer and an electron transport layer
A technology of electroluminescent devices and electron transport layers, which is applied in the fields of organic chemistry, luminescent materials, organic semiconductor devices, etc., can solve the problems of not specifically disclosing organic electroluminescent devices, etc., and achieve the effect of long life
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example 1
[0152] [Example 1] Preparation of compound C-24
[0153]
[0154] 1) Preparation of compound 1-1
[0155] In compound A (CAS: 1044146-16-8, 36g, 124mmol), 4-chloro-2-formylphenylboronic acid (25.2g, 136mmol), tetrakis (triphenylphosphine) palladium (5.7g, 5.0mmol) , sodium carbonate (33 g, 150 mmol), toluene (600 mL), EtOH (150 mL) and distilled water (150 mL) were added to the reaction vessel, and the mixture was stirred at 140° C. for 3 hours. After the reaction was completed, the precipitated solid was washed with distilled water and MeOH. The obtained compound 1-1 was used in the next reaction without further purification.
[0156] 2) Preparation of compound 1-2
[0157] After compound 1-1 (45.6 g, 130 mmol), (methoxymethyl)triphenylphosphonium chloride (74.3 g, 217 mmol) and tetrahydrofuran (1500 mL) were introduced into the reaction vessel, the reaction mixture was stirred for 5 minutes, And then potassium tert-butoxide (KOtBu) (1 M in THF, 220 mL) was slowly ...
example 2
[0162] [Example 2] Preparation of compound C-1
[0163]
[0164] 1) Preparation of compound 2-1
[0165] Compound C (10g, 29mmol), bis(pinacolyl) diborane (8.8g, 34.8mmol), tris(dibenzylideneacetone)dipalladium (Pd 2 (dba) 3) (1.3g, 1.45mmol), 2-dicyclohexylphosphino-2',6'-dimethoxybiphenyl (s-phos) (1.2g, 2.9mmol), potassium acetate (KOAc) (8.5g , 87 mmol) and 1,4-dioxane (150 mL) were added to the reaction vessel, and then the mixture was stirred at 140° C. for 3 hours. After the reaction was completed, the mixture was cooled to room temperature, and then extracted with ethyl acetate. After drying the extracted organic layer with magnesium sulfate, the solvent was removed therefrom with a rotary evaporator. The remaining product was purified by column chromatography to obtain compound 2-1 (10.4 g, yield: 82%).
[0166] 2) Preparation of compound C-1
[0167] In compound 2-1 (10g, 23.8mmol), 2-chloro-4,6-diphenyltriazine (CAS: 3842-55-5, 6.4g, 23.8mmol), three (d...
example 3
[0168] [Example 3] Preparation of compound C-17
[0169]
[0170] In compound C (8g, 23.1mmol), compound D (CAS: 1448296-00-1, 7.7g, 23.1mmol), tetrakis (triphenylphosphine) palladium (1.4g, 1.19mmol), K 2 CO 3 (8.2 g, 60 mmol), toluene (90 mL), EtOH (30 mL) and distilled water (30 mL) were added to the reaction vessel, and the mixture was stirred at 140° C. for 3 hours. After the reaction was completed, the precipitated solid was washed with distilled water and MeOH. The obtained compound was purified by column chromatography to obtain compound C-17 (8.7 g, yield: 77%).
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