4-BROMO-1-TRITYL-1H-PYRAZOLE
- Product Name
- 4-BROMO-1-TRITYL-1H-PYRAZOLE
- CAS No.
- 95162-14-4
- Chemical Name
- 4-BROMO-1-TRITYL-1H-PYRAZOLE
- Synonyms
- 4-Bromo-1-tritylpyrazole;4-BROMO-1-TRITYL-1H-PYRAZOLE;4-Bromo-1-trityl-1H-pyraziole;4-bromo-1-(triphenylmethyl)pyrazole;4-bromo-1-(triphenylmethyl)-1H-pyrazole;1H-Pyrazole,4-broMo-1-(triphenylMethyl)-
- CBNumber
- CB81559372
- Molecular Formula
- C22H17BrN2
- Formula Weight
- 389.29
- MOL File
- 95162-14-4.mol
4-BROMO-1-TRITYL-1H-PYRAZOLE Property
- Melting point:
- 186-188℃ (hexane )
- Boiling point:
- 520.3±50.0 °C(Predicted)
- Density
- 1.27±0.1 g/cm3 (20 ºC 760 Torr)
- storage temp.
- Sealed in dry,Room Temperature
- pka
- -0.51±0.10(Predicted)
- form
- Powder
- color
- White
Safety
- HS Code
- 2933199090
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.
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.
N-Bromosuccinimide Price
- Product number
- B700325
- Product name
- 4-Bromo-1-trityl-1H-pyrazole
- Packaging
- 5g
- Price
- $60
- Updated
- 2021/12/16
- Product number
- 3H32-9-9Q
- Product name
- 4-Bromo-1-trityl-1H-pyrazole
- Packaging
- 1g
- Price
- $184
- Updated
- 2021/12/16
- Product number
- 089625
- Product name
- 4-Bromo-1-trityl-1H-pyraziole
- Packaging
- 1g
- Price
- $198
- Updated
- 2021/12/16
- Product number
- 6345AC
- Product name
- 4-Bromo-1-trityl-1H-pyrazole
- Packaging
- 10g
- Price
- $284
- Updated
- 2021/12/16
- Product number
- HCH0358728
- Product name
- 4-BROMO-1-TRITYL-1H-PYRAZOLE
- Purity
- 95.00%
- Packaging
- 5MG
- Price
- $500.23
- Updated
- 2021/12/16
4-BROMO-1-TRITYL-1H-PYRAZOLE Chemical Properties,Usage,Production
Synthesis
2075-45-8
76-83-5
95162-14-4
To a 500 mL Schlenk flask pre-displaced with nitrogen was added 4-bromo-1H-pyrazole (10.0 g, 68.0 mmol) and anhydrous tetrahydrofuran (250 mL). After cooling the reaction system to 0°C, 60% sodium hydride dispersion (3.3 g, 81.6 mmol) was slowly added. After the hydrogen release stopped, triphenylchloromethane (20.9 g, 74.8 mmol) was slowly added and the reaction mixture was stirred at room temperature overnight. Upon completion of the reaction, the reaction was quenched with deionized water (5 mL) and subsequently dried under vacuum. The resulting residue was ground with dichloromethane (5 mL) and treated with methanol (200 mL) for 2 hours. The resulting suspension was filtered and dried at 50°C overnight to give 4-bromo-1-trityl-1H-pyrazole (26.0 g, 66.8 mmol, 98.2% yield) as a white solid. The product was characterized by 1H NMR (300 MHz, DMSO-d6) with chemical shifts of δ = 7.03-7.06 (m, 6H), 7.34-7.40 (m, 9H), 7.51 (s, 1H), 7.76 (s, 1H).
References
[1] Tetrahedron Letters, 2016, vol. 57, # 8, p. 895 - 898
[2] Patent: US2008/261975, 2008, A1. Location in patent: Page/Page column 12
[3] Journal of the American Chemical Society, 2011, vol. 133, # 31, p. 12285 - 12292
[4] Patent: US2009/82403, 2009, A1. Location in patent: Page/Page column 81
[5] Patent: US2007/105904, 2007, A1. Location in patent: Page/Page column 78
4-BROMO-1-TRITYL-1H-PYRAZOLE Preparation Products And Raw materials
Raw materials
Preparation Products
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