4-bromo-2-ethylpyridine
- Product Name
- 4-bromo-2-ethylpyridine
- CAS No.
- 156761-88-5
- Chemical Name
- 4-bromo-2-ethylpyridine
- Synonyms
- 4-bromo-2-ethylpyridine;Pyridine, 4-bromo-2-ethyl-
- CBNumber
- CB22499282
- Molecular Formula
- C7H8BrN
- Formula Weight
- 186.05
- MOL File
- 156761-88-5.mol
4-bromo-2-ethylpyridine Property
- Boiling point:
- 97-98℃ (30 Torr)
- Density
- 1.413±0.06 g/cm3(Predicted)
- storage temp.
- under inert gas (nitrogen or Argon) at 2-8°C
- pka
- 4.26±0.10(Predicted)
- Appearance
- Colorless to light yellow Liquid
- InChI
- InChI=1S/C7H8BrN/c1-2-7-5-6(8)3-4-9-7/h3-5H,2H2,1H3
- InChIKey
- TVRGNBFSOZCSSE-UHFFFAOYSA-N
- SMILES
- C1(CC)=NC=CC(Br)=C1
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
- Precautionary statements
-
P264Wash hands thoroughly after handling.
P264Wash skin thouroughly after handling.
P270Do not eat, drink or smoke when using this product.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
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.
P321Specific treatment (see … on this label).
P330Rinse mouth.
P332+P313IF SKIN irritation occurs: Get medical advice/attention.
P362Take off contaminated clothing and wash before reuse.
P501Dispose of contents/container to..…
N-Bromosuccinimide Price
- Product number
- B700215
- Product name
- 4-Bromo-2-ethylpyridine
- Packaging
- 100mg
- Price
- $100
- Updated
- 2021/12/16
- Product number
- B700215
- Product name
- 4-Bromo-2-ethylpyridine
- Packaging
- 1g
- Price
- $655
- Updated
- 2021/12/16
- Product number
- B700215
- Product name
- 4-Bromo-2-ethylpyridine
- Packaging
- 10mg
- Price
- $55
- Updated
- 2021/12/16
- Product number
- CS-0035828
- Product name
- 4-Bromo-2-ethylpyridine
- Packaging
- 100mg
- Price
- $80
- Updated
- 2021/12/16
- Product number
- CS-0035828
- Product name
- 4-Bromo-2-ethylpyridine
- Packaging
- 5g
- Price
- $975
- Updated
- 2021/12/16
4-bromo-2-ethylpyridine Chemical Properties,Usage,Production
Description
4-bromo-2-ethylpyridine is an important raw material and intermediate for organic synthesis, pharmaceuticals, agrochemicals and dyes. It can be used as a starting material for the synthesis of crown ester bipyridines and violet essences by sodium or nickel reductive coupling, side chain oxidation and esterification.
Uses
4-Bromo-2-ethylpyridine is a reactant in the preparation of 4-oxo-7-pyridinyl-3-quinolinecarboxylates.
Synthesis
925-90-6
19524-06-2
156761-88-5
The general procedure for the synthesis of 4-bromo-2-ethylpyridine from ethylmagnesium bromide and 4-bromopyridine hydrochloride was as follows: the preparation was carried out according to the method described in Journal of Organic Chemistry, 1985, Vol. 50, No. 22, pp. 4410-4411. First, a THF (100 mL) slurry of 4-bromopyridine hydrochloride (4.17 g, 0.021 mol) was cooled to -78°C under nitrogen protection. Subsequently, ethylmagnesium bromide (15.7 mL, 3.0 M ether solution, 2.2 eq.) was added slowly dropwise via syringe. The reaction mixture was stirred at -78 °C for 10 min before removing the ice bath and allowing it to warm naturally to room temperature. Upon completion of the reaction, it was quenched with 20% aqueous ammonium chloride solution and diluted with ether. The organic phase was washed sequentially with water, 1N HCl aqueous solution and saturated sodium chloride aqueous solution. The organic layer was dried over magnesium sulfate, filtered and concentrated in vacuum. The residue was redissolved in toluene (100 mL) and tetrachloro-1,2-benzoquinone (5.8 g, 1.1 eq.) pre-dissolved in acetic acid (50 mL) was added under nitrogen protection. The reaction mixture was stirred overnight at room temperature. Subsequently, the pH was adjusted to basic with 1N NaOH aqueous solution and extracted with ethyl acetate. The organic phase was acidified with 1N HCl aqueous solution and extracted again with ethyl acetate. The organic phases were combined, washed with saturated aqueous sodium chloride solution, dried over magnesium sulfate, filtered and concentrated in vacuo to give a brown residue (2.64 g, 66% yield).LCMS (ES) analysis showed m/z 188 (M+1, bromide mode).
References
[1] Patent: WO2006/91671, 2006, A1. Location in patent: Page/Page column 26
4-bromo-2-ethylpyridine Preparation Products And Raw materials
Raw materials
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