3-Chloro-4-ethynylpyridine

Name: 3-Chloro-4-ethynylpyridine
Brand: ChemScene
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CAS No. 1379109-40-6
Cat. No. CS-0445716
Purity≥97%
MDL No.None

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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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Structure of 1379109-40-6

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Description

3-Chloro-4-ethynylpyridine features a conjugated alkyne tethered to a chloropyridine core, enabling efficient coupling in cross-coupling and click chemistry applications. The electron-deficient pyridine ring enhances reactivity in palladium-catalyzed transformations, while the terminal alkyne supports robust Sonogashira and cycloaddition protocols under standard conditions.

Application

3-Chloro-4-ethynylpyridine serves as a versatile building block in synthetic organic chemistry, enabling palladium-catalyzed cross-coupling reactions due to its orthogonal functional groups. The chloropyridine moiety facilitates nucleophilic substitution, while the terminal alkyne supports Sonogashira coupling and click chemistry applications. Its bench-stable nature and compatibility with diverse reaction conditions make it a practical choice for constructing complex heterocyclic scaffolds and functionalized aryl-alkyne architectures in medicinal chemistry and materials science.

General Information

CAS No. 1379109-40-6
Cat. No. CS-0445716
Purity ≥97%
MDL No. None
Storage 4°C, stored under nitrogen
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₇H₄ClN
Molecular Weight 137.57
Synonym(s) 3-Chloro-4-éthynylpyridine
SMILES C#CC1=CC=NC=C1Cl

Computational Chemistry Data

TPSA 12.89
LogP 1.7163
H_Acceptors 1
H_Donors 0
Rotatable_Bonds 0

Safety Information

Download SDS

GHS Pictogram :	GHS No : GHS06
Signal Word : Danger	UN#: 2811
Class : 6.1	Packing Group : Ⅲ
Hazard Statements : H301
Precautionary Statements : P264-P270-P330-P405-P501

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Other Classifications

Building Blocks Functional Group Alkyne

Building Blocks Skeleton Aromatic heterocycle compounds Pyridine compounds

Life Science Click Chemistry Reagents Alkyne

Chemical Biology Pharmaceutical Development and Drug Discovery Research Conjugation Chemistry/Click Chemistry Terminal Alkynes

Chemical Biology Conjugation Chemistry/Click Chemistry Terminal Alkynes

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3-Chloro-4-ethynylpyridine

CAS No. 1379109-40-6

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