Methyl 3-broMo-6-chloropyrazine-2-carboxylate
- Product Name
- Methyl 3-broMo-6-chloropyrazine-2-carboxylate
- CAS No.
- 13457-28-8
- Chemical Name
- Methyl 3-broMo-6-chloropyrazine-2-carboxylate
- Synonyms
- Methyl 3-broMo-6-chloropyrazine-2-carboxylate;3-Bromo-6-chloro-pyrazine-2-carboxylic acid methyl ester;2-Pyrazinecarboxylic acid, 3-bromo-6-chloro-, methyl ester
- CBNumber
- CB72595970
- Molecular Formula
- C6H4BrClN2O2
- Formula Weight
- 251.47
- MOL File
- 13457-28-8.mol
Methyl 3-broMo-6-chloropyrazine-2-carboxylate Property
- Melting point:
- 35-36 °C
- Boiling point:
- 292.4±35.0 °C(Predicted)
- Density
- 1.772±0.06 g/cm3(Predicted)
- storage temp.
- under inert gas (nitrogen or Argon) at 2-8°C
- pka
- -3.78±0.10(Predicted)
- Appearance
- White to light yellow <35°C Solid,>36°C Liquid
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H227Combustible liquid
H315Causes skin irritation
H319Causes serious eye irritation
- Precautionary statements
-
P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P264Wash hands thoroughly after handling.
P264Wash skin thouroughly after handling.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P302+P352IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P332+P313IF SKIN irritation occurs: Get medical advice/attention.
P337+P313IF eye irritation persists: Get medical advice/attention.
P370+P378In case of fire: Use … for extinction.
P403+P235Store in a well-ventilated place. Keep cool.
P501Dispose of contents/container to..…
N-Bromosuccinimide Price
- Product number
- M296258
- Product name
- Methyl3-bromo-6-chloropyrazine-2-carboxylate
- Packaging
- 100mg
- Price
- $65
- Updated
- 2021/12/16
- Product number
- 4H58-D-04
- Product name
- Methyl 3-bromo-6-chloropyrazine-2-carboxylate
- Packaging
- 250mg
- Price
- $125
- Updated
- 2021/12/16
- Product number
- 4H58-D-04
- Product name
- Methyl 3-bromo-6-chloropyrazine-2-carboxylate
- Packaging
- 1g
- Price
- $375
- Updated
- 2021/12/16
- Product number
- 4H58-D-04
- Product name
- Methyl 3-bromo-6-chloropyrazine-2-carboxylate
- Packaging
- 5G
- Price
- $1250
- Updated
- 2021/12/16
- Product number
- 1753DN
- Product name
- Methyl3-bromo-6-chloropyrazine-2-carboxylate
- Packaging
- 250mg
- Price
- $227
- Updated
- 2021/12/16
Methyl 3-broMo-6-chloropyrazine-2-carboxylate Chemical Properties,Usage,Production
Uses
Methyl 3-broMo-6-chloropyrazine-2-carboxylate is an important intermediate for the synthesis of a class of antitumour drugs, SHP2 inhibitors, which can be used in the pharmaceutical development process.
Synthesis
1458-03-3
13457-28-8
The general procedure for the synthesis of methyl 3-bromo-6-chloropyrazine-2-carboxylate from methyl 3-amino-6-chloropyrazine-2-carboxylate was as follows: 100 mL of acetic acid was added to a 500 mL three-necked flask and cooled to 0 °C. Methyl 3-amino-6-chloropyrazine-2-carboxylate (20 g, 0.11 mol) was slowly added dropwise to 100 mL of aqueous hydrogen bromide solution at 0 °C. The dropwise addition process was continued for 30 min to ensure complete reaction. Subsequently, 50 mL of aqueous sodium nitrite (20.7 g, 0.33 mol) was slowly added dropwise while maintaining 0°C. After 30 minutes of reaction, the completion of the reaction was confirmed and 30 mL of 10% sodium bisulfite solution was added to terminate the reaction. The reaction mixture was extracted with ethyl acetate (200 mL x 2 times), the organic phases were combined and dried with 20 g of anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure to give methyl 3-bromo-6-chloropyrazine-2-carboxylate (23.3 g, 87% yield) as a white solid.
References
[1] Patent: CN108101857, 2018, A. Location in patent: Paragraph 0035-0037
Methyl 3-broMo-6-chloropyrazine-2-carboxylate Preparation Products And Raw materials
Raw materials
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