40971-88-8

Basic information

• Product Name: 8-Chlorotetrazolo[1,5-a]pyridine
• Synonyms: 8-Chlorotetrazolo[1,5-a]pyridine;8-Chlorotetrazolo[1,5-a]pyridine 98%;8-Chlorotetrazolo[1,5-a]pyridine98%
• CAS NO: 40971-88-8
• Molecular Formula: C5H3ClN4
• Molecular Weight: 154.55712
• Product Categories: blocks;Heterocycles;Pyridines;Heterocycle-Pyridine series
• Mol File: 40971-88-8.mol
• Article Data: 3

Chemical Properties

• Melting Point: 194-200
• Appearance: /
• Density: 1.71 g/cm³
• Refractive Index: 1.791
• Storage Temp.: Keep Cold
• PKA: 0.41±0.30(Predicted)
• CAS DataBase Reference: 8-Chlorotetrazolo[1,5-a]pyridine(CAS DataBase Reference)
• NIST Chemistry Reference: 8-Chlorotetrazolo[1,5-a]pyridine(40971-88-8)
• EPA Substance Registry System: 8-Chlorotetrazolo[1,5-a]pyridine(40971-88-8)

Safety Data

• Hazard Codes: Xi
• Hazardous Substances Data: 40971-88-8(Hazardous Substances Data)

Usage

General Description

8-Chlorotetrazolo[1,5-a]pyridine is a chemical compound with the molecular formula C5H3ClN4. It is a heterocyclic compound that contains a tetrazole ring fused to a pyridine ring with a chlorine atom attached to the tetrazole ring. This chemical is mainly used as a building block in the synthesis of pharmaceuticals, agrochemicals, and other organic compounds. It is also known for its potential pharmacological properties, including its ability to act as an inhibitor for certain enzymes. Additionally, 8-Chlorotetrazolo[1,5-a]pyridine is known for its potential use as a ligand in organometallic chemistry, making it a versatile and valuable compound in various chemical applications.

InChI:InChI=1/C5H3ClN4/c6-4-2-1-3-10-5(4)7-8-9-10/h1-3H

Upstream product

• 22841-92-5 (3-chloro-2-pyridyl)hydrazine 
• 1851-22-5 3-chloropyridine-N-oxide 
• 2402-77-9 2,3-dichloro-pyridine 

Downstream Products

• 1617530-40-1 C₁₃H₉ClN₄ 

Relevant articles and documents

Pyridine-phosphinimine ligand-accelerated Cu(I)-catalyzed azide-alkyne cycloaddition for preparation of 1-(pyridin-2-yl)-1,2,3-triazole derivatives

A series of phosphinimine ligands were designed and used in the Cu(i)-catalyzed azide-alkyne cycloaddition (CuAAC) reaction of tetrazolo[1,5-a]pyridines and alkynes for the first time. By optimizing the reaction conditions, an efficient catalytic system (CuCl/2-PyCH 2NPtBu3) was developed to give 1-(pyridin-2-yl)-1,2,3-triazole derivatives in moderate to excellent yields (46-98%). This journal is the Partner Organisations 2014.

1H, 13C and 15N NMR and IR studies of halogen-substituted tetrazolo[1,5-a]pyridines

The tetrazole-azide tautomerization of some halogen-substituted tetrazolo[1,5-a]pyridines was examined by IR spectroscopy at ambient temperature and by 1H, 13C and 15N NMR spectroscopy at various temperatures. The tetrazolopyridines can exhibit equilibrium between the azide and the tetrazole forms. For some of them slow exchange occurs on the NMR time-scale, such that it is possible to estimate equilibrium constants. The position and nature of the substituent in the pyridine ring result in stabilization or destabilization of the tetrazole form and exert a strong influence on the values found for the equilibrium constants. A saturation transfer experiment was carried out for 5-bromotetrazolo[1,5-a]pyridine and the rate constants were estimated. Moreover, based on the van't Hoff equation, the enthalpy ΔHo and entropy ΔSo for the tautomerization were calculated. Ab initio calculated energies and charge distribution are in good agreement with differences observed in the tetrazole-azide equilibrium constants. Copyright