2-Bromo-3-chloropyrazine

Name: 2-Bromo-3-chloropyrazine
Brand: ChemScene
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CAS No. 1206250-01-2
Cat. No. CS-0155505
Purity≥97%
MDL No.MFCD14581973

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Type	HazMat Fee
Excepted Quantity	$0.00
FedEx Limited Quantities Ground	$0.00
Hazmat Ground shipping	$50.00+
Inaccessible (Haz class 6.1 or 9), Domestic	$68.00+
Accessible (Haz class 3, 4, 5 or 8), Domestic	$158.00+
Inaccessible (Haz class 6.1 or 9), International	$108.00+
Accessible (Haz class 3, 4, 5 or 8), International	$238.00+

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General Information

CAS No. 1206250-01-2
Cat. No. CS-0155505
Purity ≥97%
MDL No. MFCD14581973
Storage 4°C
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₄H₂BrClN₂
Molecular Weight 193.43
Synonym(s) None
SMILES C1=NC(=C(Cl)N=C1)Br

Description

2-Bromo-3-chloropyrazine is a halogenated pyrazine derivative featuring complementary reactive sites for cross-coupling and functionalization. This electron-deficient heterocycle integrates readily into synthetic scaffolds, enabling efficient access to bioactive molecules through palladium-catalyzed transformations under standard conditions.

Application

2-Bromo-3-chloropyrazine serves as a versatile building block in heterocyclic synthesis, enabling palladium-catalyzed cross-coupling reactions due to its orthogonal halogen reactivity. The bromo group facilitates efficient coupling with boronic acids or organozinc reagents, while the chloro substituent remains inert under standard conditions, allowing for sequential functionalization. This selective reactivity profile supports the construction of complex pyrazine-based scaffolds relevant to medicinal chemistry and agrochemical development. The compound exhibits good bench stability and is readily purified by flash chromatography.

Safety Information

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GHS Pictogram :	GHS No : GHS07
Signal Word : Warning	UN#: N/A
Class : N/A	Packing Group : N/A
Hazard Statements : H302-H315-H319-H335
Precautionary Statements : P261-P264-P270-P271-P280-P302+P352-P304+P340-P305+P351+P338-P330-P362+P364-P403+P233-P405-P501

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Computational Chemistry Data

TPSA 25.78
LogP 1.8925
H_Acceptors 2
H_Donors 0
Rotatable_Bonds 0

Other Classifications

Building Blocks Functional Group Bromide

Building Blocks Skeleton Aromatic heterocycle compounds Pyrazine compounds

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2-Bromo-3-chloropyrazine

CAS No. 1206250-01-2

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