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

China 53 Germany 1 India 1 United Kingdom 1 United States 7 Global 63

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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

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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