ChemicalBook > CAS DataBase List > 3,4-Dimethylphenylboronic acid

3,4-Dimethylphenylboronic acid

Product Name
3,4-Dimethylphenylboronic acid
CAS No.
55499-43-9
Chemical Name
3,4-Dimethylphenylboronic acid
Synonyms
AKOS BRN-0224;4-Borono-o-xylene;RARECHEM AH PB 0185;3,4-Dimethylphenylbo;3,4-Dimethylphenylboronicaci;3,4-diemthylphenylboronic acid;3,4-DIMETHYLPHENYLBORONIC ACID;3,4-DIMETHYLBENZENEBORONIC ACID;B-(3,4-DiMethylphenyl)boronic acid;3,4-Dimethylphenylboronic acid,97%
CBNumber
CB8668145
Molecular Formula
C8H11BO2
Formula Weight
149.98
MOL File
55499-43-9.mol
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3,4-Dimethylphenylboronic acid Property

Melting point:
220°C
Boiling point:
304.9±52.0 °C(Predicted)
Density 
1.07±0.1 g/cm3(Predicted)
storage temp. 
Keep in dark place,Sealed in dry,Room Temperature
solubility 
soluble in Methanol
form 
Powder
pka
8.89±0.10(Predicted)
color 
White to slightly beige
BRN 
2963858
CAS DataBase Reference
55499-43-9(CAS DataBase Reference)
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Safety

Hazard Codes 
Xn,Xi
Risk Statements 
36/37/38-22-41-37/38
Safety Statements 
37/39-26-36/37-39
HazardClass 
IRRITANT
HS Code 
29319090
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P405Store locked up.

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N-Bromosuccinimide Price

TCI Chemical
Product number
D3110
Product name
3,4-Dimethylphenylboronic Acid (contains varying amounts of Anhydride)
Packaging
1g
Price
$58
Updated
2025/07/31
TCI Chemical
Product number
D3110
Product name
3,4-Dimethylphenylboronic Acid (contains varying amounts of Anhydride)
Packaging
5g
Price
$212
Updated
2025/07/31
TRC
Product number
D479928
Product name
3,4-Dimethylphenylboronicacid
Packaging
1g
Price
$55
Updated
2021/12/16
Biosynth Carbosynth
Product number
FD36721
Product name
3,4-Dimethylphenylboronic acid
Packaging
100g
Price
$450
Updated
2021/12/16
American Custom Chemicals Corporation
Product number
BOR0001166
Product name
3,4-DIMETHYL PHENYL BORONIC ACID
Purity
95.00%
Packaging
5G
Price
$867.17
Updated
2021/12/16
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3,4-Dimethylphenylboronic acid Chemical Properties,Usage,Production

Chemical Properties

Off-white Cryst

Uses

suzuki reaction

Synthesis

255837-23-1

55499-43-9

The general procedure for the synthesis of 3,4-dimethylphenylboronic acid from trifluoromethanesulfonic acid-3,4-dimethylphenyl ester is as follows: in a 50 mL round-bottomed flask (equipped with a side arm, condenser, and stirring bar) triphenylphosphine (0.131 g, 0.5 mmol, 20 mol%), p-iodoiodobenzene (0.585 g, 2.5 mmol), and triethylamine (1.78 mL, 12.5 mmol). The system was degassed by alternating vacuum and argon filling three times. Palladium dichloride (0.023 g, 0.13 mmol, 5 mol%) was added under positive argon atmosphere. After stirring at room temperature for 15 minutes, diisopropylaminoborane (5 mL, 1 M THF solution, 5 mmol) was added and again degassed by alternating vacuum and argon filling three times. The reaction mixture was heated to reflux and maintained at reflux for 12 hours. Upon completion of the reaction, it was cooled to 0 °C and methanol (6 mL, note: exothermic reaction accompanied by hydrogen release) was slowly added. Stirring was continued for 15 minutes, followed by concentration under reduced pressure to remove all solvent to give a black solid. The solid was dissolved in 3M sodium hydroxide solution (8 mL) and washed with hexane (3 x 10 mL). The aqueous phase was cooled to 0 °C (ice bath) and acidified with concentrated hydrochloric acid to pH ≤ 1, at which point 3,4-dimethylphenylboronic acid precipitated as a white solid. The aqueous phase was extracted with ether (3 x 10 mL), the organic phases were combined, dried with magnesium sulfate and filtered. Finally, the solvent was removed by concentration under reduced pressure to give the white solid product 3,4-dimethylphenylboronic acid.

References

[1] Tetrahedron, 2011, vol. 67, # 3, p. 576 - 583

3,4-Dimethylphenylboronic acid Preparation Products And Raw materials

Raw materials

Preparation Products

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View Lastest Price from 3,4-Dimethylphenylboronic acid manufacturers

Henan Fengda Chemical Co., Ltd
Product
3,4-Dimethylphenylboronic acid 55499-43-9
Price
US $34.00-1.20/kg
Min. Order
1kg
Purity
99%
Supply Ability
g-kg-tons, free sample is available
Release date
2024-04-08
Zhuozhou Wenxi import and Export Co., Ltd
Product
3,4-Dimethylphenylboronic acid 55499-43-9
Price
US $15.00-10.00/KG
Min. Order
1KG
Purity
99%+ HPLC
Supply Ability
Monthly supply of 1 ton
Release date
2021-07-10
Zhuozhou Wenxi import and Export Co., Ltd
Product
3,4-Dimethylphenylboronic acid 55499-43-9
Price
US $15.00-10.00/KG
Min. Order
1KG
Purity
99%+ HPLC
Supply Ability
Monthly supply of 1 ton
Release date
2021-07-09

55499-43-9, 3,4-Dimethylphenylboronic acidRelated Search:

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  • 3,4-DIMETHYLBENZENEBORONIC ACID
  • 3,4-diemthylphenylboronic acid
  • 3,4-Dimethylbenzeneboronic acid, 98+%
  • 3,4-Dimethylphenylboronic acid ,98%
  • 3,4-Dimethylphenylbo
  • 3,4-Dimethylphenylboronic acid, May contain varying amounts of anhydride, 97%
  • 3,4-Dimethylphenylboronic acid,97%
  • B-(3,4-DiMethylphenyl)boronic acid
  • 3,4-DiMethylphenylboronic Acid (contains varying aMounts of Anhydride)
  • 3,4-DiMethylphenylboronic acid, 97%, May contain varying aMounts of anhydride
  • 3,4-Dimethylbenzeneboronic acid 98%
  • 4-Borono-o-xylene
  • RARECHEM AH PB 0185
  • AKOS BRN-0224
  • 3,4-DIMETHYLPHENYLBORONIC ACID
  • Boronic acid, B-(3,4-dimethylphenyl)-
  • 3,4-Dimethylphenylboronicaci
  • 3,4-Dimethylphenylboronic acid - [D2960]
  • 55499-43-9
  • C8H11O2B
  • Heterocyclic Compounds
  • Boronic Acid
  • Boronic acids
  • Aryl
  • Organoborons
  • blocks
  • BoronicAcids