1,3,2-DIOXABOROLANE, 2-(9,9-DIMETHYL-9H-FLUOREN-2-YL)-4,4,5,5-TETRAMETHYL

Product Name: 1,3,2-DIOXABOROLANE, 2-(9,9-DIMETHYL-9H-FLUOREN-2-YL)-4,4,5,5-TETRAMETHYL
CAS No.: 569343-09-5
Chemical Name: 1,3,2-DIOXABOROLANE, 2-(9,9-DIMETHYL-9H-FLUOREN-2-YL)-4,4,5,5-TETRAMETHYL
Synonyms: FL-B;FL-BE;Fluorene-2-boronic acid pyranoside;1,3,2-Dioxaborolane,2-(9,9-dimethyl-9H-fluoren-2-;9,9-Dimethylfluorene-2-boronicacidpinacolester,95%;9,9-DiMethylfluorene-2-boronic acid pinacol ester, 95%;2-(9,9-DIMETHYL-9H-FLUOROEN-2-YL)-4,4,5,5-TETRAMETHYL-1,3;2-(9,9-dimethylfluoren-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxa...;9,9-Dimethyl-2-(4,4',5,5'-tetramethyl-1,3,2-dioxaborolano)fluorene;2-(9,9-dimethylfluoren-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
CBNumber: CB9836662
Molecular Formula: C21H25BO2
Formula Weight: 320.23
MOL File: 569343-09-5.mol

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1,3,2-DIOXABOROLANE, 2-(9,9-DIMETHYL-9H-FLUOREN-2-YL)-4,4,5,5-TETRAMETHYL Property

Melting point:: 134.0 to 138.0 °C
Boiling point:: 443.1±24.0 °C(Predicted)
Density: 1.09±0.1 g/cm3(Predicted)
storage temp.: under inert gas (nitrogen or Argon) at 2-8°C
form: powder to crystal
color: White to Almost white
InChI: InChI=1S/C21H25BO2/c1-19(2)17-10-8-7-9-15(17)16-12-11-14(13-18(16)19)22-23-20(3,4)21(5,6)24-22/h7-13H,1-6H3
InChIKey: DAZFRJAIIUPRQZ-UHFFFAOYSA-N
SMILES: O1C(C)(C)C(C)(C)OB1C1C=CC2C3=C(C(C)(C)C=2C=1)C=CC=C3

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Safety

WGK Germany: 3
HS Code: 2931900090

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H413May cause long lasting harmful effects to aquatic life

Precautionary statements

P273Avoid release to the environment.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 729280
Product name: 9,9-Dimethylfluorene-2-boronic acid pinacol ester
Purity: 95%
Packaging: 1g
Price: $81
Updated: 2023/06/20

TCI Chemical

Product number: D5018
Product name: 2-(9,9-Dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
Purity: >98.0%(HPLC)(T)
Packaging: 1g
Price: $39
Updated: 2025/07/31

TCI Chemical

Product number: D5018
Product name: 2-(9,9-Dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
Purity: >98.0%(HPLC)(T)
Packaging: 5g
Price: $133
Updated: 2025/07/31

TRC

Product number: D485278
Product name: 1,3,2-Dioxaborolane,2-(9,9-dimethyl-9h-fluoren-2-yl)-4,4,5,5-tetramethyl
Packaging: 100mg
Price: $45
Updated: 2021/12/16

ChemScene

Product number: CS-0041017
Product name: 2-(9,9-Dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
Purity: ≥98.0%
Packaging: 10g
Price: $46
Updated: 2021/12/16

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1,3,2-DIOXABOROLANE, 2-(9,9-DIMETHYL-9H-FLUOREN-2-YL)-4,4,5,5-TETRAMETHYL Chemical Properties,Usage,Production

Uses

9,9-Dimethylfluorene-2-boronic acid pinacol ester can be used in the synthesis of 1,2-diphenylindolizine derivatives for potential usage in organic light emitting diodes (OLEDs). It can also be used in the synthesis of pyrene-fluorene based chromophores for applications in photocatalysis and organic electronic devices.

Synthesis

28320-31-2

73183-34-3

569343-09-5

Under nitrogen protection, 2-bromo-9,9-dimethylfluorene (100 g, 366 mmol, purchased from Sigma Aldrich Co., Ltd.) was dissolved in dimethylformamide (DMF, 1.1 L). Subsequently, bis(pinacolato)diboron (112 g, 439 mmol), [1,1'-bis(diphenylphosphino)ferrocene]palladium(II) dichloride (2.99 g, 3.66 mmol) and potassium acetate (108 g, 1,098 mmol) were added to the solution. The reaction mixture was heated to 150 °C and refluxed for 5 hours. After completion of the reaction, water was added to the reaction solution, the mixture was filtered and dried in a vacuum oven. The resulting residue was separated and purified by fast column chromatography to afford the target product fluorene-2-boronic acid katanol ester (102 g, 87% yield). High resolution mass spectrometry (HRMS, 70 eV, EI+): m/z calculated value of C21H25BO2[M]+ was 320.1948, measured value was 320. elemental analysis results: C, 79%; H, 8%.

References

[1] Patent: US2017/373255, 2017, A1. Location in patent: Paragraph 0164; 0165; 0166; 0167
[2] Patent: KR2017/88601, 2017, A. Location in patent: Paragraph 0160-0165
[3] Patent: WO2013/180376, 2013, A1. Location in patent: Paragraph 138; 139; 140
[4] Patent: US9825230, 2017, B2. Location in patent: Page/Page column 34

1,3,2-DIOXABOROLANE, 2-(9,9-DIMETHYL-9H-FLUOREN-2-YL)-4,4,5,5-TETRAMETHYL Preparation Products And Raw materials

Raw materials

Preparation Products

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1,3,2-DIOXABOROLANE, 2-(9,9-DIMETHYL-9H-FLUOREN-2-YL)-4,4,5,5-TETRAMETHYL Suppliers

Americas 1 China 107 Europe 1 Germany 1 India 4 Japan 1 United Kingdom 1 United States 9 Global 125

Apollo Scientific Ltd.

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Email: sales@apolloscientific.co.uk
Country: United Kingdom
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View Lastest Price from 1,3,2-DIOXABOROLANE, 2-(9,9-DIMETHYL-9H-FLUOREN-2-YL)-4,4,5,5-TETRAMETHYL manufacturers

Shanghai Daken Advanced Materials Co.,Ltd

Product: 1,3,2-Dioxaborolane, 2-(9,9-dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl- 569343-09-5
Price: US $0.00/KG
Min. Order: 1KG
Purity: 98.00%
Supply Ability: 150KG /month
Release date: 2021-11-15

Henan Fengda Chemical Co., Ltd

Product: 9,9-Dimethylfluorene-2-boronic acid pinacol ester 569343-09-5
Price: US $200.00-1.00/KG
Min. Order: 1KG
Purity: 99%, 99.5% Sublimated
Supply Ability: g-kg-tons, free sample is available
Release date: 2024-01-02

Career Henan Chemical Co

Product: 1,3,2-DIOXABOROLANE, 2-(9,9-DIMETHYL-9H-FLUOREN-2-YL)-4,4,5,5-TETRAMETHYL 569343-09-5
Price: US $2.00/kg
Min. Order: 1kg
Purity: 99%
Supply Ability: ask
Release date: 2018-12-20

569343-09-5, 1,3,2-DIOXABOROLANE, 2-(9,9-DIMETHYL-9H-FLUOREN-2-YL)-4,4,5,5-TETRAMETHYLRelated Search:

1,3,2-DIOXABOROLANE, 2,2'-(9,9-DIMETHYL-9H-FLUORENE-2,7-DIYL)BIS[4,4,5,5-TETRAMETHYL] (2,7-BIS(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-9,9-DIOCTYLFLUORENE) 9,9-DiMethylfluorene-3-boronic acid pinacol ester 4,4,5,5-tetramethyl-2-(9,9'-spirobi[9H-fluoren]-4-yl)-1,3,2-Dioxaborolane 9,9-Spirodifluorene-2-Boronic acid pinacol ester 4 - boric acid pinacol ester - 9, 9 - dimethyl fluorene 9,9-Spirodifluorene-3-Boronic acid pinacol ester 9,9-diphenyl-9H-fluoreN-4-ylboronicacid 4-Pinacol ester-9,9-dipehnylfluorene 9,9-diphenyl-fluoren-3-boronic acid pinacol ester 9,9-Dimethyl-9H-fluorene 9,9-Dimethyl-9H-fluoren-2-yl-boronic acid 1,3,2-DIOXABOROLANE, 2-(9,9-DIMETHYL-9H-FLUOREN-2-YL)-4,4,5,5-TETRAMETHYL 3,4-Dimethylphenylboronic acid 3-ISOPROPYLBENZENEBORONIC ACID ETHYLENE GLYCOL ESTER 3-BENZYLPHENYLBORONIC ACID PINACOL ESTER 4-BIPHENYLBORONIC ACID, PINACOL ESTER M-T-BUTYLPHENYLBORONIC ACID

2-(9,9-DIMETHYL-9H-FLUOROEN-2-YL)-4,4,5,5-TETRAMETHYL-1,3

1,3,2-DIOXABOROLANE, 2-(9,9-DIMETHYL-9H-FLUOREN-2-YL)-4,4,5,5-TETRAMETHYL

2-(9,9-DIMETHYL-9H-FLUOREN-2-YL)-4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLANE

1,3,2-Dioxaborolane,2-(9,9-dimethyl-9H-fluoren-2-

2-(9,9-DIMETHYL-9H-FLUOROEN-2-YL)-4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLANE

1,3,2-DIOXABOROLANE, 2-(9,9-DIMETHYL-9H-FLUOREN-2-YL)-4,4,5,5-TETRAMETHYL- (9CI)

9,9-DiMethylfluorene-2-boronic acid pinacol ester, 95%

FL-BE

9,9-Dimethyl-2-(4,4',5,5'-tetramethyl-1,3,2-dioxaborolano)fluorene

2-(9,9-dimethylfluoren-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane

2-(9,9-Dimethyl-9<i>H</i>-fluoren-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane

1,3,2-Dioxaborolane, 2-(9,9-Dimethy-9H-fluoren-2-yl)-4,4,5,5-tetramethyl

2-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolane-2-yl)-9,9-dimethylfluoren

FL-B

9,9-Dimethyl-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)fluorene

9,9-Dimethylfluorene-2-boronicacidpinacolester,95%

9,9-Dimethyl-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolane-2-yl)-9H-fluorene

2-(9,9-dimethylfluoren-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxa...

2-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolane-2-yl)-9,9-dimethyl-9H-fluorene

2-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolane-2-yl)-9,9'-dimethylfluoren

2-(9,9-Dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane，98%

Fluorene-2-boronic acid pyranoside

569343-09-5

C21H25BO2

Boron Compounds