ChemicalBook >> CAS DataBase List >>1,3,2-Dioxaborolane, 2-(9,9-dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl

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

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

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: 2-(9,9-DIMETHYL-9H-FLUOREN-2-YL)-4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLANE;FL-B;FL-BE;2-DMF-TMDOB;Fluorene-2-boronic acid pyranoside;1,3,2-Dioxaborolane,2-(9,9-dimethyl-9H-fluoren-2-;9,9-DiMethylfluorene-2-boronic acid pinacol ester;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

CBNumber:: CB9836662

Molecular Formula:: C21H25BO2

Molecular Weight:: 320.23

MDL Number:: MFCD08704229

MOL File:: 569343-09-5.mol

MSDS File:: SDS

Last updated:2026-09-12 18:56:37

Request For Quotation

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

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
UNSPSC Code	12352103
NACRES	NA.23

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS07

Signal word

Warning

Hazard statements

H413

Precautionary statements

P501-P273

WGK Germany

HS Code

2931900090

Storage Class

11 - Combustible Solids

NFPA 704

	0
0		0

1,3,2-Dioxaborolane, 2-(9,9-dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl price More Price(31)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	729280	9,9-Dimethylfluorene-2-boronic acid pinacol ester 95%	569343-09-5	1g	$81	2023-06-20	Buy
TCI Chemical	D5018	2-(9,9-Dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane >98.0%(HPLC)(T)	569343-09-5	1g	$33	2026-04-30	Buy
TCI Chemical	D5018	2-(9,9-Dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane >98.0%(HPLC)(T)	569343-09-5	5g	$113	2026-04-30	Buy
Apolloscientific	OR303498	2-(9,9-Dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl-[1,3,2]dioxaborolane >98%	569343-09-5	5g	$21	2026-06-04	Buy
Apolloscientific	OR303498	2-(9,9-Dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl-[1,3,2]dioxaborolane >98%	569343-09-5	25g	$71	2026-06-04	Buy

Product number	Packaging	Price	Buy
729280	1g	$81	Buy
D5018	1g	$33	Buy
D5018	5g	$113	Buy
OR303498	5g	$21	Buy
OR303498	25g	$71	Buy

1,3,2-Dioxaborolane, 2-(9,9-dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl Chemical Properties, Uses, 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

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

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

2-Bromo-9,9-dimethylfluorene Bis(pinacolato)diboron 9,9-Dimethyl-2-iodofluorene Potassium Acetate N,N-Dimethylformamide

[1,1'-Bis(diphenylphosphino)ferrocene]dichloropalladium(II)

1of2

Preparation Products

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

Global Suppliers ( 133)

Supplier	Tel	Email	Country	ProdList	Advantage
Alfa Aesar	400-6106006	saleschina@alfa-asia.com	China	30103	84
TCI (Shanghai) Development Co., Ltd.	021-67121386	Sales-CN@TCIchemicals.com	China	24512	81
Jia Xing Isenchem Co.,Ltd	0573-85285100 18627885956	isenchem@163.com	China	9389	66
Puyang Huicheng Electronic Material Co. Ltd.	0393-0393-8910800 15039333257	info@huichengchem.com	China	588	64
Adamas Reagent, Ltd.	400-6009262 15618770481	yhx@titansci.com	China	14098	59
Shanghai Hanhong Scientific Co.,Ltd.	021-54306202 13764082696	info@hanhongsci.com	China	42917	64
T&W GROUP	021-61551611 13296011611	contact@trustwe.com	China	9884	58
TOKYO CHEMICAL INDUSTRY CO., LTD.	03-36680489	Sales-JP@TCIchemicals.com	Japan	28364	80
TCI Europe	320-37350700	sales@tcieurope.eu	Europe	23654	75
TCI AMERICA	800-4238616	sales@tciamerica.com	Americas	23636	75

Supplier	Advantage
Alfa Aesar	84
TCI (Shanghai) Development Co., Ltd.	81
Jia Xing Isenchem Co.,Ltd	66
Puyang Huicheng Electronic Material Co. Ltd.	64
Adamas Reagent, Ltd.	59
Shanghai Hanhong Scientific Co.,Ltd.	64
T&W GROUP	58
TOKYO CHEMICAL INDUSTRY CO., LTD.	80
TCI Europe	75
TCI AMERICA	75

View Latest Price from 1,3,2-Dioxaborolane, 2-(9,9-dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl manufacturers

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2026-09-02	9,9-Dimethylfluorene-2-boronic acid pinacol ester 569343-09-5	$1.00-200.00	1KG	99%, 99.5% Sublimated		Henan Fengda Chemical Co., Ltd
2026-08-18	1,3,2-Dioxaborolane, 2-(9,9-dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl- 569343-09-5		1KG	98.00%	150KG /month	Shanghai Daken Advanced Materials Co.,Ltd
2019-07-06	1,3,2-DIOXABOROLANE, 2-(9,9-DIMETHYL-9H-FLUOREN-2-YL)-4,4,5,5-TETRAMETHYL 569343-09-5	$2.00	1kg	99%		Career Henan Chemical Co

9,9-Dimethylfluorene-2-boronic acid pinacol ester
569343-09-5
$1.00-200.00
99%, 99.5% Sublimated
Henan Fengda Chemical Co., Ltd

1,3,2-Dioxaborolane, 2-(9,9-dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl-
569343-09-5
$0.00
98.00%
Shanghai Daken Advanced Materials Co.,Ltd

1,3,2-DIOXABOROLANE, 2-(9,9-DIMETHYL-9H-FLUOREN-2-YL)-4,4,5,5-TETRAMETHYL
569343-09-5
$2.00
99%
Career Henan Chemical Co

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

1,3,2-DIOXABOROLANE, 2-(9,9-DIMETHYL-9H-FLUOREN-2-YL)-4,4,5,5-TETRAMETHYL(569343-09-5)¹HNMR

569343-09-5 (1,3,2-Dioxaborolane, 2-(9,9-dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl) Related Search:

(2,7-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-9,9-dioctylfluorene) 1,3,2-Dioxaborolane, 2,2'-(9,9-dimethyl-9H-fluorene-2,7-diyl)bis[4,4,5,5-tetramethyl] 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-Dimethylfluorene 9,9-Dimethyl-9H-fluoren-2-yl-boronic acid 3,4-Dimethylphenylboronic acid 3-Isopropylbenzeneboronic acid ethylene glycol ester 1,3,2-Dioxaborolane, 2-(9,9-dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl

m-t-Butylphenylboronic acid 3-Benzylphenylboronic acid pinacol ester 4-Biphenylboronic acid, pinacol ester

1of4

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- 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-9H-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 (9,9-Dimethyl-9H-fluoren- 2-yl)-4,4,5,5-tetramethyl- 1,3,2-dioxaborolane 9,9-DiMethylfluorene-2-boronic acid pinacol ester 2-(9,9-DIMETHYL-9H-FLUOREN-2-YL)-4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLANE 2-DMF-TMDOB 1,3,2-Dioxaborolane, 2-(9,9-dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl 569343-09-5 202895-34-5 C21H25BO2 Boron Compounds