| Identification | Back Directory | [Name]
2-Bromopyrazine | [CAS]
56423-63-3 | [Synonyms]
Bromopyrazine
2-BROMOPYRAZINE
Pyrazine, 2-bromo-
2-Bromopyrazine >
2-Bromo-1,4-diazine
2-BROMOPYRAZINE, 95+%
Pyrazine, bromo- (9CI)
2-Bromopyrazine ISO 9001：2015 REACH | [Molecular Formula]
C4H3BrN2 | [MDL Number]
MFCD08275680 | [MOL File]
56423-63-3.mol | [Molecular Weight]
158.98 |
| Chemical Properties | Back Directory | [Boiling point ]
61°C/10mmHg(lit.) | [density ]
1.757 g/mL at 25 °C | [refractive index ]
n20/D1.580 | [Fp ]
92℃ | [storage temp. ]
?20°C | [form ]
clear liquid | [pka]
-1.15±0.10(Predicted) | [color ]
Colorless to Light orange to Yellow | [InChI]
InChI=1S/C4H3BrN2/c5-4-3-6-1-2-7-4/h1-3H | [InChIKey]
WGFCNCNTGOFBBF-UHFFFAOYSA-N | [SMILES]
C1(Br)=NC=CN=C1 |
| Hazard Information | Back Directory | [Synthesis]
A mixture of (2H)-pyrazinone (4.2 g, 0.044 mmol) and phosphorous oxybromide (25 g, 0.088 mole) was heated at 105 °C for 1.5 h. After cooling to room temperature, the mixture was poured on crushed ice (300 g) and made neutral with sodium hydrogen carbonate. The mixture was extracted with dichloromethane (2 x 100 mL). The extract was dried with magnesium sulfate and evaporated under vacuum. The residue was distilled under vacuum (70 °C, 12 torr). 2-Bromopyrazine (3.2 g, 46 %) was obtained as a colourless liquid[1]. | [References]
[1] Laurence Decrane, Alain Turck, Nelly Plé. “Metalation of bromodiazines. Diazines XL.” Journal of Heterocyclic Chemistry 42 4 (2009): 509–513. |
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