ChemicalBook > CAS DataBase List > 4-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-1-trityl-1H-pyrazole

4-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-1-trityl-1H-pyrazole

Product Name
4-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-1-trityl-1H-pyrazole
CAS No.
863238-73-7
Chemical Name
4-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-1-trityl-1H-pyrazole
Synonyms
1-Trityl-1H-pyrazole-4-boronic acid pinacol ester;4-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-1-trityl-1H...;4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-trityl-pyrazole;4-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-1-trityl-1H-pyrazole;4-(tetraMethyl-1,3,2-dioxaborolan-2-yl)-1-(triphenylMethyl)-1H-pyrazole;4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-(triphenylmethyl)pyrazole;4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1-(triphenylmethyl)-1H-pyrazole;1H-Pyrazole, 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-(triphenylmethyl)-
CBNumber
CB72470112
Molecular Formula
C28H29BN2O2
Formula Weight
436.35
MOL File
863238-73-7.mol
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4-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-1-trityl-1H-pyrazole Property

Boiling point:
587.3±50.0 °C(Predicted)
Density 
1.07±0.1 g/cm3 (20 ºC 760 Torr)
storage temp. 
under inert gas (nitrogen or Argon) at 2-8°C
pka
1.37±0.10(Predicted)
Appearance
White to off-white Solid
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H302Harmful if swallowed

H315Causes skin irritation

H319Causes serious eye irritation

H332Harmful if inhaled

H335May cause respiratory irritation

Precautionary statements

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

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

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

TRC
Product number
T889598
Product name
4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1-trityl-1H-pyrazole
Packaging
500mg
Price
$130
Updated
2021/12/16
ChemScene
Product number
CS-0019333
Product name
4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1-tritylpyrazole
Purity
≥97.0%
Packaging
5g
Price
$198
Updated
2021/12/16
ChemScene
Product number
CS-0019333
Product name
4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1-tritylpyrazole
Purity
≥97.0%
Packaging
250mg
Price
$27
Updated
2021/12/16
ChemScene
Product number
CS-0019333
Product name
4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1-tritylpyrazole
Purity
≥97.0%
Packaging
1g
Price
$67
Updated
2021/12/16
American Custom Chemicals Corporation
Product number
BOR0006735
Product name
4-(4,4,5,5-TETRAMETHYL-[1,3,2]DIOXABOROLAN-2-YL)-1-TRITYL-1H-PYRAZOLE
Purity
95.00%
Packaging
1G
Price
$326.55
Updated
2021/12/16
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4-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-1-trityl-1H-pyrazole Chemical Properties,Usage,Production

Synthesis

95162-14-4

73183-34-3

863238-73-7

The general procedure for the synthesis of 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-trityl-1H-pyrazole from 1-trityl-4-bromopyrazole and bis(pinacolato)diboron was carried out in the following manner: under stirring conditions, 5.0 g (12.8 mmol) of 1-trityl-4-bromo-1H-pyrazole, 9.8 g (38.6 mmol, 3.0 eq.) bis(pinacolato)diboron, 1.0 g (1.3 mmol, 10 mol%) of PdCl2 (dppf), and 6.3 g (64.2 mmol, 5.0 eq.) of potassium acetate were dissolved in 30 mL of DMF and heated to react for 16 hr at 80 °C. After completion of the reaction, the mixture was diluted with water and the product was extracted with dichloromethane. The organic layer was sequentially washed with brine, dried over anhydrous sodium sulfate, and finally purified by fast chromatography to afford 5.1 g (91% yield) of the target compound 4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-1-trityl-1H-pyrazole.

References

[1] Patent: US2008/261975, 2008, A1. Location in patent: Page/Page column 12
[2] Journal of Organic Chemistry, 2018, vol. 83, # 5, p. 2954 - 2958
[3] Patent: US2009/82403, 2009, A1. Location in patent: Page/Page column 81
[4] Patent: US2007/105904, 2007, A1. Location in patent: Page/Page column 78-79

4-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-1-trityl-1H-pyrazole Preparation Products And Raw materials

Raw materials

Preparation Products

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4-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-1-trityl-1H-pyrazole Suppliers

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View Lastest Price from 4-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-1-trityl-1H-pyrazole manufacturers

Career Henan Chemical Co
Product
4-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-1-trityl-1H-pyrazole 863238-73-7
Price
US $1.00/KG
Min. Order
1KG
Purity
98%-100%
Supply Ability
1
Release date
2018-08-12

863238-73-7, 4-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-1-trityl-1H-pyrazoleRelated Search:


  • 4-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-1-trityl-1H-pyrazole
  • 4-(tetraMethyl-1,3,2-dioxaborolan-2-yl)-1-(triphenylMethyl)-1H-pyrazole
  • 1-Trityl-1H-pyrazole-4-boronic acid pinacol ester
  • 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-trityl-pyrazole
  • 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-(triphenylmethyl)pyrazole
  • 1H-Pyrazole, 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-(triphenylmethyl)-
  • 4-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-1-trityl-1H...
  • 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1-(triphenylmethyl)-1H-pyrazole
  • 863238-73-7
  • C28H29BN2O2