100124-06-9

Basic information

• Product Name: DIBENZOFURAN-4-BORONIC ACID
• Synonyms: RARECHEM AH PB 0052;TIMTEC-BB SBB003426;DIBENZO[B,D]FURAN-4-YLBORONIC ACID;DIBENZOFURAN-4-BORONIC ACID;4-DIBENZOFURANBORONIC ACID;AKOS BRN-0085;Dibenzofuran-4-boronic acid, 98+%;dibenzofuran-4-ylboronic acid
• CAS NO: 100124-06-9
• Molecular Formula: C₁₂H₉BO₃
• Molecular Weight: 212.01
• EINECS: -0
• Product Categories: Heterocyclic Compounds;Boronic acid;Dibenzofuran;Organoborons;Boronic Acids;Boronic Acids and Derivatives;Heteroaryl;OLED materials,pharm chemical,electronic
• Mol File: 100124-06-9.mol
• Article Data: 17

Chemical Properties

• Melting Point: 286-291 °C(lit.)
• Boiling Point: 438.5 °C at 760 mmHg
• Flash Point: 219 °C
• Appearance: Off-white to beige powder
• Density: 1.34 g/cm³
• Vapor Pressure: 0.011mmHg at 25°C
• Refractive Index: 1.485
• Storage Temp.: 0-6°C
• PKA: 8.04±0.30(Predicted)
• BRN: 1645426
• CAS DataBase Reference: DIBENZOFURAN-4-BORONIC ACID(CAS DataBase Reference)
• NIST Chemistry Reference: DIBENZOFURAN-4-BORONIC ACID(100124-06-9)
• EPA Substance Registry System: DIBENZOFURAN-4-BORONIC ACID(100124-06-9)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 37/39-26-24/25
• WGK Germany: 3
• TSCA: No
• HazardClass: IRRITANT
• Hazardous Substances Data: 100124-06-9(Hazardous Substances Data)

Usage

Description

Dibenzofuran-4-boronic acid (DBFBA) is a boronic acid that has been used as a cross-coupling agent in the Suzuki coupling reaction. It has been shown to have low efficiency, but advances in this area have been made through the use of methanol extraction and photophysical properties. DBFBA is often coupled with imidazole derivatives to form anti-inflammatory compounds. The bond cleavage and hydrogen bonding properties of DBFBA make it a good target for drug synthesis.

Chemical Properties

off-white to beige powder

InChI:InChI=1/C6H5BF2O2/c8-4-1-2-5(7(10)11)6(9)3-4/h1-3,10-11H

Synthetic route

4-bromodibenzofuran (89827-45-2) + Triisopropyl borate (5419-55-6) → 4-dibenzofurylboronic acid (100124-06-9)

Conditions	Yield
Stage #1: 4-bromodibenzofuran With n-butyllithium In tetrahydrofuran at -78℃; for 1.5h; Inert atmosphere; Stage #2: Triisopropyl borate In tetrahydrofuran at 20℃; for 8h;	94%
Stage #1: 4-bromodibenzofuran With n-butyllithium In tetrahydrofuran at -78℃; for 1.5h; Inert atmosphere; Stage #2: Triisopropyl borate In tetrahydrofuran at 20℃; for 8h;

dibenzofuran (132-64-9) + Trimethyl borate (121-43-7) + water (7732-18-5) → 4-dibenzofurylboronic acid (100124-06-9)

Conditions	Yield
Stage #1: dibenzofuran With n-butyllithium In tetrahydrofuran; hexane; acetone at -60 - 20℃; for 5h; Inert atmosphere; Stage #2: Trimethyl borate In tetrahydrofuran; hexane; acetone at -45 - 20℃; for 15h; Inert atmosphere; Stage #3: water With hydrogenchloride In tetrahydrofuran; hexane; acetone at 10 - 20℃; for 4h; Inert atmosphere;	93.8%
Stage #1: dibenzofuran With n-butyllithium In tetrahydrofuran; hexane at -78℃; for 1.5h; Stage #2: Trimethyl borate In tetrahydrofuran; hexane at -78 - 20℃; for 12.5h; Stage #3: water With hydrogenchloride In tetrahydrofuran; hexane at 0℃;	69.3%

dibenzofuran (132-64-9) + bis(diisopropylamino)chloroborane (28049-80-1) + water (7732-18-5) → 4-dibenzofurylboronic acid (100124-06-9)

Conditions	Yield
Stage #1: dibenzofuran With n-butyllithium; N,N,N,N,-tetramethylethylenediamine In hexane for 2h; Inert atmosphere; Reflux; Stage #2: bis(diisopropylamino)chloroborane In hexane at 0℃; Inert atmosphere; Stage #3: water With hydrogenchloride at 10℃; pH=2 - 3;	88%

dibenzofuran (132-64-9) + bromobis(dimethylamino)borane (6990-27-8) + water (7732-18-5) → 4-dibenzofurylboronic acid (100124-06-9)

Conditions	Yield
Stage #1: dibenzofuran With n-butyllithium; N,N,N,N,-tetramethylethylenediamine In hexane for 2h; Inert atmosphere; Reflux; Stage #2: bromobis(dimethylamino)borane In hexane at -10℃; for 3h; Inert atmosphere; Stage #3: water With hydrogenchloride at -10 - 10℃; pH=2 - 3;	82%

4-bromodibenzofuran (89827-45-2) + Trimethyl borate (121-43-7) → 4-dibenzofurylboronic acid (100124-06-9)

Conditions	Yield
Stage #1: 4-bromodibenzofuran With n-butyllithium In tetrahydrofuran; hexane at -78℃; for 1h; Inert atmosphere; Stage #2: Trimethyl borate In tetrahydrofuran; hexane at -78 - 20℃; for 2h; Inert atmosphere; Stage #3: With hydrogenchloride In tetrahydrofuran; hexane; water at 20℃; for 3h;	80%
Stage #1: 4-bromodibenzofuran With n-butyllithium In tetrahydrofuran at -78 - 0℃; for 1h; Inert atmosphere; Stage #2: Trimethyl borate In tetrahydrofuran at -78℃; Stage #3: With hydrogenchloride In tetrahydrofuran; water for 0.5h;	73%
Stage #1: 4-bromodibenzofuran With n-butyllithium In tetrahydrofuran at -78 - 0℃; for 1h; Inert atmosphere; Stage #2: Trimethyl borate In tetrahydrofuran at -78℃; for 12h; Stage #3: With hydrogenchloride; water In tetrahydrofuran for 0.5h;	73%
Stage #1: 4-bromodibenzofuran With n-butyllithium In tetrahydrofuran for 1h; Stage #2: Trimethyl borate In tetrahydrofuran at 20℃;	70%
Stage #1: 4-bromodibenzofuran With n-butyllithium In tetrahydrofuran for 2h; Cooling with acetone-dry ice; Stage #2: Trimethyl borate In tetrahydrofuran at -78 - 0℃; for 1h; Stage #3: With hydrogenchloride In tetrahydrofuran; water at 0 - 20℃; for 8h;

dibenzofuran (132-64-9) + chloro-bis(dimethylamino)borane (6562-41-0) + water (7732-18-5) → 4-dibenzofurylboronic acid (100124-06-9)

Conditions	Yield
Stage #1: dibenzofuran With n-butyllithium; N,N,N,N,-tetramethylethylenediamine In hexane for 2h; Inert atmosphere; Reflux; Stage #2: chloro-bis(dimethylamino)borane In hexane at -10℃; Inert atmosphere; Stage #3: water With hydrogenchloride at 10℃; pH=2 - 3;	77%

dibenzofuran (132-64-9) + Trimethyl borate (121-43-7) → 4-dibenzofurylboronic acid (100124-06-9)

Conditions	Yield
Stage #1: dibenzofuran With n-butyllithium In tetrahydrofuran at -78℃; for 1h; Inert atmosphere; Stage #2: Trimethyl borate In tetrahydrofuran at 20℃; for 1h; Inert atmosphere;	48.5%

dibenzofuran (132-64-9) + Triisopropyl borate (5419-55-6) → 4-dibenzofurylboronic acid (100124-06-9)

Conditions	Yield
Stage #1: dibenzofuran With n-butyllithium In tetrahydrofuran; hexane at -68 - -20℃; for 1h; Inert atmosphere; Stage #2: Triisopropyl borate In tetrahydrofuran; hexane at -68 - 20℃; for 5h; Stage #3: With hydrogenchloride In tetrahydrofuran; hexane; water; ethyl acetate

dibenzofuran (132-64-9) → 4-dibenzofurylboronic acid (100124-06-9)

Conditions	Yield
Multi-step reaction with 2 steps 1.1: n-butyllithium / tetrahydrofuran; hexane / 6 h / -78 - 0 °C / Inert atmosphere 1.2: 10 h / 20 °C 2.1: n-butyllithium / tetrahydrofuran / 2 h / Cooling with acetone-dry ice 2.2: 1 h / -78 - 0 °C 2.3: 8 h / 0 - 20 °C View Scheme
Multi-step reaction with 2 steps 1.1: n-butyllithium / tetrahydrofuran / 2.5 h / -40 - 20 °C / Inert atmosphere 1.2: 2.5 h / -78 - 20 °C 2.1: n-butyllithium / tetrahydrofuran / 1 h / -78 - 0 °C / Inert atmosphere 2.2: -78 °C 2.3: 0.5 h View Scheme
Multi-step reaction with 2 steps 1.1: n-butyllithium / tetrahydrofuran / 2.5 h / -40 - 20 °C / Inert atmosphere 1.2: 2.5 h / -78 - 20 °C 2.1: n-butyllithium / tetrahydrofuran / 1 h / -78 - 0 °C / Inert atmosphere 2.2: 12 h / -78 °C 2.3: 0.5 h View Scheme

Triisopropyl borate (5419-55-6) + C17H16O3Zn → 4-dibenzofurylboronic acid (100124-06-9)

Conditions	Yield
With copper(I) iodide-lithium chloride In tetrahydrofuran at 20℃; Schlenk technique; Inert atmosphere;

4-bromodibenzofuran (89827-45-2) + Triisopropyl borate (5419-55-6) + water (7732-18-5) → 4-dibenzofurylboronic acid (100124-06-9)

Conditions	Yield
Stage #1: 4-bromodibenzofuran With n-butyllithium In tetrahydrofuran at -78℃; for 0.5h; Inert atmosphere; Stage #2: Triisopropyl borate In tetrahydrofuran at -78 - 20℃; for 0.5h; Stage #3: water With hydrogenchloride In tetrahydrofuran

1-bromo-2-fluoro-3 iodobenzene → 4-dibenzofurylboronic acid (100124-06-9)

Conditions	Yield
Multi-step reaction with 4 steps 1.1: tetrakis(triphenylphosphine) palladium(0); potassium carbonate; tetrabutyl-ammonium chloride / water; toluene; ethanol / 12 h / 78 °C / Inert atmosphere 2.1: boron tribromide / dichloromethane / 3.33 h / 20 °C / Inert atmosphere 3.1: sodium hydroxide / 1-methyl-pyrrolidin-2-one / 3 h / Reflux 4.1: n-butyllithium / tetrahydrofuran / 1 h 4.2: 20 °C View Scheme

2-Methoxyphenylboronic acid (5720-06-9) → 4-dibenzofurylboronic acid (100124-06-9)

Conditions	Yield
Multi-step reaction with 4 steps 1.1: tetrakis(triphenylphosphine) palladium(0); potassium carbonate; tetrabutyl-ammonium chloride / water; toluene; ethanol / 12 h / 78 °C / Inert atmosphere 2.1: boron tribromide / dichloromethane / 3.33 h / 20 °C / Inert atmosphere 3.1: sodium hydroxide / 1-methyl-pyrrolidin-2-one / 3 h / Reflux 4.1: n-butyllithium / tetrahydrofuran / 1 h 4.2: 20 °C View Scheme

C13H10BrFO → 4-dibenzofurylboronic acid (100124-06-9)

Conditions	Yield
Multi-step reaction with 3 steps 1.1: boron tribromide / dichloromethane / 3.33 h / 20 °C / Inert atmosphere 2.1: sodium hydroxide / 1-methyl-pyrrolidin-2-one / 3 h / Reflux 3.1: n-butyllithium / tetrahydrofuran / 1 h 3.2: 20 °C View Scheme

C12H8BrFO → 4-dibenzofurylboronic acid (100124-06-9)

Conditions	Yield
Multi-step reaction with 2 steps 1.1: sodium hydroxide / 1-methyl-pyrrolidin-2-one / 3 h / Reflux 2.1: n-butyllithium / tetrahydrofuran / 1 h 2.2: 20 °C View Scheme

4-dibenzofurylboronic acid (100124-06-9) + para-bromotoluene (106-38-7) → 4-(4-methylphenyl)dibenzofuran

Conditions	Yield
With tetra-butylammonium acetate; Pd EnCat-30TM In ethanol at 120℃; for 0.166667h; Suzuki cross-coupling; microwave irradiation;	100%

4-dibenzofurylboronic acid (100124-06-9) + 3,5-Dichloroaniline (626-43-7) + Glyoxilic acid (298-12-4) → (dibenzofuran-4-yl)-(3,5-dichlorophenylamino)acetic acid (745013-41-6)

Conditions	Yield
In dichloromethane at 20℃;	100%

4-dibenzofurylboronic acid (100124-06-9) + 2-nitrophenyl bromide (577-19-5) → 4-(2-nitrophenyl)dibenzo[b,d]furan (1246308-80-4)

Conditions	Yield
With tetrakis(triphenylphosphine) palladium(0); sodium carbonate In ethanol; toluene for 12h; Reflux;	100%
With potassium carbonate; tetrakis(triphenylphosphine) palladium(0) In ethanol; water; toluene for 24h; Reflux;	99.7%
With tetrakis(triphenylphosphine) palladium(0); potassium carbonate In ethanol; water; toluene for 3h; Reflux;	98%

4-dibenzofurylboronic acid (100124-06-9) + 2-(carboxymethyl)-4-iodobenzoic acid (1354742-59-8) → 2-(carboxymethyl)-4-(dibenzo[b,d]furan-4-yl)benzoic acid (1354742-90-7)

Conditions	Yield
With tetrakis(triphenylphosphine) palladium(0); potassium carbonate In ethanol; water at 150℃; for 0.5h; Suzuki coupling; Inert atmosphere; Microwave irradiation;	100%

2-Chloro-3-nitropyridine (5470-18-8) + 4-dibenzofurylboronic acid (100124-06-9) → 2-(dibenzo[b,d]furan-4-yl)-3-nitropyridine

Conditions	Yield
With tetrakis(triphenylphosphine) palladium(0); potassium carbonate In ethanol; water; toluene Inert atmosphere; Reflux;	100%
With tetrakis(triphenylphosphine) palladium(0); potassium carbonate In tetrahydrofuran; water for 6h; Inert atmosphere; Reflux;	84%
With tetrakis(triphenylphosphine) palladium(0); potassium carbonate In tetrahydrofuran; water for 6h; Suzuki Coupling; Reflux; Inert atmosphere;	84%

4-dibenzofurylboronic acid (100124-06-9) + 4-chlorobenzonitrile (100-00-5) → 4-(4'-nitrophenyl)dibenzofuran

Conditions	Yield
With caesium carbonate In N,N-dimethyl acetamide at 80℃; for 3.5h; Suzuki-Miyaura Coupling; Inert atmosphere; chemoselective reaction;	100%

benzoimidazole (51-17-2) + 4-dibenzofurylboronic acid (100124-06-9) → 1-(dibenzo[b,d]furan-4-yl)-1H-benzo[d]imidazole

Conditions	Yield
With copper(I) oxide In methanol at 20℃;	98%

4-dibenzofurylboronic acid (100124-06-9) + C10H9IO3 (1236563-13-5) → 5-(dibenzo[b,d]furan-4-yl)-2,2-dimethyl-4H-benzo[d][1,3]-dioxin-4-one (1456799-04-4)

Conditions	Yield
With tetrakis(triphenylphosphine) palladium(0); sodium hydrogencarbonate In 1,2-dimethoxyethane; water at 110℃; for 0.0666667h; Suzuki Coupling; Inert atmosphere; Microwave irradiation;	98%

4-dibenzofurylboronic acid (100124-06-9) + 2-bromoaniline (615-36-1) → 2-(dibenzo[b,d]furan-4-yl)aniline (1559070-70-0)

Conditions	Yield
Stage #1: 4-dibenzofurylboronic acid; 2-bromoaniline With potassium carbonate In 1,2-dimethoxyethane; water at 20℃; for 0.5h; Inert atmosphere; Schlenk technique; Stage #2: With dichlorobis(tri-O-tolylphosphine)palladium In 1,2-dimethoxyethane; water at 80℃; for 12h; Inert atmosphere; Schlenk technique;	98%
With potassium phosphate; tetrakis(triphenylphosphine) palladium(0) In 1,4-dioxane; water at 120℃; for 3h;	88%
With tetrakis(triphenylphosphine) palladium(0); potassium carbonate In ethanol; water; toluene for 5h; Reflux;	65%

p-nitrobenzene iodide (636-98-6) + 4-dibenzofurylboronic acid (100124-06-9) → 4-(4'-nitrophenyl)dibenzofuran

Conditions	Yield
With sodium phosphate; palladium on activated charcoal In water; isopropyl alcohol at 80℃; for 1h; Suzuki-Miyaura coupling reaction;	97%
With sodium phosphate dodecahydrate; palladium 10% on activated carbon In water; isopropyl alcohol at 80℃; for 1h; hetero-Suzuki-Miyaura cross-coupling; Inert atmosphere;	97%

4-dibenzofurylboronic acid (100124-06-9) + 2-chloro-5-bromonitrobenzene (41513-04-6) → C18H10ClNO3

Conditions	Yield
With tetrakis(triphenylphosphine) palladium(0); sodium carbonate In ethanol; water; toluene at 120℃; for 2h;	97%
With tetrakis(triphenylphosphine) palladium(0); potassium carbonate In water; toluene at 90℃; for 24h; Inert atmosphere;	65.49%

3-bromo-9-phenyl-9H-carbazole (1153-85-1) + 4-dibenzofurylboronic acid (100124-06-9) → 3-(dibenzofuran-4-yl)-9-phenyl-9H-carbazole

Conditions	Yield
With tetrakis(triphenylphosphine) palladium(0); sodium carbonate In ethanol; water; toluene for 16h; Suzuki Coupling; Reflux;	97%
With tetrakis(triphenylphosphine) palladium(0); sodium carbonate In ethanol; water; toluene for 16h; Suzuki Coupling; Reflux;	97%
In ethanol; water; toluene

4-dibenzofurylboronic acid (100124-06-9) + 3-bromo-N-phenyl-6-phenylcarbazole (1160294-85-8) → 3-dibenzofuran-4-yl-6,9-diphenyl-9H-carbazole

Conditions	Yield
With tetrakis(triphenylphosphine) palladium(0); sodium carbonate In ethanol; water; toluene for 16h; Suzuki Coupling; Reflux;	97%

bromochlorobenzene (106-39-8) + 4-dibenzofurylboronic acid (100124-06-9) → 4-(4-chlorophenyl)dibenzo[b,d]furan

Conditions	Yield
With potassium carbonate In water; toluene at 90℃; for 2h; Suzuki-Miyaura Coupling; chemoselective reaction;	97%
With tetrakis(triphenylphosphine) palladium(0); potassium carbonate In tetrahydrofuran at 80℃; for 15h; Inert atmosphere;	80%

benzoic acid phenyl ester (93-99-2) + 4-dibenzofurylboronic acid (100124-06-9) → dibenzo[b,d]furan-4-yl(phenyl)methanone (99329-30-3)

Conditions	Yield
With [1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene](3-chloropyridyl)palladium(ll) dichloride; water; potassium carbonate In tetrahydrofuran at 23℃; for 18h; Suzuki-Miyaura Coupling; Schlenk technique; Inert atmosphere;	97%

4-dibenzofurylboronic acid (100124-06-9) + (6aR,10aR)-1-hydroxy-6,6,9-trimethyl-6a,7,10,10a-tetrahydro-6H-benzo[c]chromen-3-yl trifluoromethanesulfonate → (6aR,10aR)-3-(dibenzo[b,d]furan-4-yl)-6,6,9-trimethyl-6a,7,10,10a-tetrahydro-6H-benzo[c]chromen-1-ol

Conditions	Yield
With palladium diacetate; caesium carbonate; tricyclohexylphosphine In tetrahydrofuran; water; toluene at 80℃; Suzuki-Miyaura Coupling; Schlenk technique;	97%

[3-(bromo-phenyl)-thiazol-4-yl]-methanol (885280-57-9) + 4-dibenzofurylboronic acid (100124-06-9) → [2-(3-dibenzofuran-4-yl-phenyl)-thiazol-4-yl]methanol (1012315-89-7)

Conditions	Yield
With sodium carbonate; tetrakis(triphenylphosphine) palladium(0) In 1,2-dimethoxyethane; water at 90℃; for 8h;	96%

4-dibenzofurylboronic acid (100124-06-9) + 1-bromo-4-(trimethylsilyl)benzene (6999-03-7) → (4-dibenzofuran-4-yl-phenyl)-trimethyl-silane (796072-24-7)

Conditions	Yield
With potassium carbonate; tetrakis(triphenylphosphine) palladium(0) In ethanol; water; toluene at 80℃; for 4h;	96%
Stage #1: 4-dibenzofurylboronic acid; 1-bromo-4-(trimethylsilyl)benzene With potassium carbonate In ethanol; water; toluene for 0.0833333h; Stage #2: tetrakis(triphenylphosphine) palladium(0) In ethanol; water; toluene at 80℃; for 4h;	96%
With potassium carbonate; tetrakis(triphenylphosphine) palladium(0) In ethanol; water; toluene at 80℃; for 4h;	96%

4-dibenzofurylboronic acid (100124-06-9) + para-bromoacetophenone (99-90-1) → 1-[4-(dibenzo[b,d]furan-4-yl)phenyl]ethanone (756484-37-4)

Conditions	Yield
With sodium phosphate; palladium on activated charcoal In water; isopropyl alcohol at 80℃; for 1h; Suzuki-Miyaura coupling reaction;	96%
With sodium phosphate dodecahydrate; palladium 10% on activated carbon In water; isopropyl alcohol at 80℃; for 1h; hetero-Suzuki-Miyaura cross-coupling; Inert atmosphere;	96%
With [Pd(N-(3-chloro-2-quinoxalinyl)-N'-(2,6-diisopropylphenyl)imidazolium)(PPh3)Cl2]; potassium carbonate In water at 70℃; for 3h; Catalytic behavior; Suzuki-Miyaura Coupling;	88%
With disodium[(N,N’-bis(2-hydroxy-5-sulfonatobenzyl)-1,2-diphenyl-1,2-diaminoethano)palladate(II)]; caesium carbonate In water at 80℃; for 1h; Suzuki-Miyaura Coupling;

4-dibenzofurylboronic acid (100124-06-9) + 3-bromo-5,5-dimethlycyclohex-2-en-1-one (13271-49-3) → 3-dibenzofuran-4-yl-5,5-dimethyl-cyclohex-2-enone (1056882-10-0)

Conditions	Yield
With potassium carbonate In ethanol; water at 110℃; for 0.0833333h; Suzuki coupling; Microwave irradiation;	96%
	96%

4-dibenzofurylboronic acid (100124-06-9) + dihydrogen peroxide (7722-84-1) → 4-hydroxydibenzofuran (19261-06-4)

Conditions	Yield
With ammonium bicarbonate In water at 20℃; for 2h; Schlenk technique;	96%

Upstream product

• 132-64-9 dibenzofuran 
• 89827-45-2 4-bromodibenzofuran 
• 5419-55-6 Triisopropyl borate 
• 7732-18-5 water 
• 5720-06-9 2-Methoxyphenylboronic acid 
• 958458-89-4 1-bromo-2-fluoro-3-iodobenzene 
• 6990-27-8 bromobis(dimethylamino)borane 
• 28049-80-1 bis(diisopropylamino)chloroborane 
• 6562-41-0 chloro-bis(dimethylamino)borane 
• 121-43-7 Trimethyl borate 

Downstream Products

• 743453-07-8 N-(dibenzofuran-4-yl)-N-phenyl-amine 
• 99329-30-3 dibenzo[b,d]furan-4-yl(phenyl)methanone 
• 626605-16-1 3-{1-[3-(tert-butyldiphenylsilanyloxy)-propyl]-1H-pyrrolo[2,3-b]pyridin-3-yl}-4-dibenzofuran-4-yl-pyrrole-2,5-dione 
• 1012315-89-7 [2-(3-dibenzofuran-4-yl-phenyl)-thiazol-4-yl]methanol 
• 92185-79-0 4-(2-methoxyphenyl)dibenzofuran 
• 74104-10-2 4-phenyldibenzo[b,d]furan 
• 955959-84-9 4-(4-bromophenyl)dibenzofuran 
• 796096-45-2 [5-(4-dibenzofuran-4-yl-phenyl)-3-(4-methoxy-phenyl)-4,5-dihydro-pyrazol-1-yl]-acetic acid ethyl ester 
• 796033-93-7 methyl 4-[(4'-dibenzofuran-4-yl)biphen-4-yl]-4-oxo-2-(3-trifluoromethylbenzyl)butyrate 

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The invention discloses a synthesis method of dibenzofuran/thiophene-4-boric acid, and belongs to the field of heterocyclic boric acid synthesis in organic chemistry. The synthesis method comprises the following steps: adding dibenzofuran or dibenzothioph

Fused cyclic compound and organoelectroluminescent device comprising the compound

PURPOSE: A condensed cyclic compound is provided to drive an organic electroluminescent device at low voltage and to improve brightness and economic efficiency. CONSTITUTION: A condensed cyclic compound is denoted by chemical formula 1. An organic electroluminescence device comprises an anode, a cathode, and a layer containing the condensed cyclic compounds, placed between the anode and the cathode. A light emitting layer between the anode and the cathode contains the condensed cyclic compounds. The organic electroluminescent device further comprises one or more layers selected among a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer, and an electron injection layer.