ChemicalBook > CAS DataBase List > 5-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-1-BENZOFURAN

5-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-1-BENZOFURAN

Product Name
5-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-1-BENZOFURAN
CAS No.
519054-55-8
Chemical Name
5-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-1-BENZOFURAN
Synonyms
2-(Benzofuran-5-yl);2-dioxaborolan-2-yl)-1-benzofuran;Benzofuran-5-boronic acid pinacol ester;Benzo[b]furan-5-boronic acid, pinacol ester;5-(4,4,5,5-Tetramethyl-1,3,2-Dioxaborolan-2-Yl)-1-Ben;2-(benzofuran-5-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane;Benzofuran, 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-;5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzo[b]furan;5-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-1-BENZOFURAN;2-(1-BenzofuraN-5-Yl)-4,4,5,5-Tetramethyl-1,3,2-Dioxaborolane
CBNumber
CB7202511
Molecular Formula
C14H17BO3
Formula Weight
244.09
MOL File
519054-55-8.mol
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5-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-1-BENZOFURAN Property

Melting point:
72 °C
Boiling point:
340.0±15.0 °C(Predicted)
Density 
1.10±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
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Safety

HS Code 
2932990090
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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.

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

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N-Bromosuccinimide Price

TCI Chemical
Product number
B5823
Product name
2-(Benzofuran-5-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
Packaging
250MG
Price
$65
Updated
2025/07/31
TCI Chemical
Product number
B5823
Product name
2-(Benzofuran-5-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
Packaging
1G
Price
$194
Updated
2025/07/31
TRC
Product number
B207715
Product name
Benzofuran-5-boronicacidpinacolester
Packaging
100mg
Price
$45
Updated
2021/12/16
TRC
Product number
B207715
Product name
Benzofuran-5-boronicacidpinacolester
Packaging
250mg
Price
$55
Updated
2021/12/16
ChemScene
Product number
CS-W003183
Product name
Benzo[b]furan-5-boronicacid,pinacolester
Purity
≥97.0%
Packaging
1g
Price
$56
Updated
2021/12/16
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5-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-1-BENZOFURAN Chemical Properties,Usage,Production

Synthesis

23145-07-5

73183-34-3

519054-55-8

Under nitrogen protection, 5-bromobenzofuran (25 g, 0.126 mol), pinacol ester of bisboronic acid (38.67 g, 0.152 mol), Pd(dppf)Cl2 (3.11 g, 3 mol%), KOAc (37.36 g, 0.381 mol) and 1,4-dioxane (500 ml) were mixed. The reaction mixture was stirred at 130°C for 12 hours. After completion of the reaction, the reaction mixture was extracted with ethyl acetate and the organic phase was dried with anhydrous MgSO4. Purification by column chromatography (eluent: hexane/ethyl acetate=10:1, v/v) afforded 2-(benzofuran-5-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (23.23 g, 75% yield).

References

[1] Patent: JP2016/40292, 2016, A. Location in patent: Paragraph 0518-0520
[2] Patent: JP2015/527347, 2015, A. Location in patent: Paragraph 0131; 0132
[3] Patent: KR101599586, 2016, B1. Location in patent: Paragraph 0170-0174
[4] Patent: KR101879905, 2018, B1. Location in patent: Paragraph 1187-1191
[5] Organometallics, 2016, vol. 35, # 10, p. 1559 - 1564

5-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-1-BENZOFURAN Preparation Products And Raw materials

Raw materials

Preparation Products

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5-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-1-BENZOFURAN Suppliers

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View Lastest Price from 5-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-1-BENZOFURAN manufacturers

ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD
Product
5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-benzofuran 519054-55-8
Price
US $3.00-9.00/KG
Min. Order
0.1KG
Purity
99%
Supply Ability
g-kg-tons, free sample is available
Release date
2025-07-03
Career Henan Chemical Co
Product
5-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-1-BENZOFURAN 519054-55-8
Price
US $1.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
200kg
Release date
2019-12-24

519054-55-8, 5-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-1-BENZOFURANRelated Search:

2-(BENZOFURAN-2-YL)-4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLANE 7-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzo[b]furan Benzofuran-7-boronic acid BENZOFURAN-3-BORONIC ACID Benzofuran-2-boronic acid BENZOFURAN-5-BORONIC ACID 5-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-1-BENZOFURAN 7-METHYLBENZOFURAN-5-BORONIC ACID PINACOL ESTER

  • 5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)benzo[b]furan, 5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1-benzofuran
  • Benzofuran-5-boronic acid pinacol ester
  • 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzo[b]furan
  • 2-(Benzofuran-5-yl)
  • 2-(benzofuran-5-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
  • Benzo[b]furan-5-boronic acid, pinacol ester
  • 2-dioxaborolan-2-yl)-1-benzofuran
  • 2-(1-BenzofuraN-5-Yl)-4,4,5,5-Tetramethyl-1,3,2-Dioxaborolane
  • 5-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-1-BENZOFURAN
  • 5-(4,4,5,5-Tetramethyl-1,3,2-Dioxaborolan-2-Yl)-1-Ben
  • Benzofuran, 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-
  • 519054-55-8
  • C14H17BO3