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374822 Sigma-Aldrich

4-Bromopyrazole

99%

  • CAS Number 2075-45-8

  • Empirical Formula (Hill Notation) C3H3BrN2

  • Molecular Weight 146.97

  •  MDL number MFCD00075602

  •  PubChem Substance ID 24863341

  •  NACRES NA.22

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Properties

Related Categories Building Blocks, C3 to C5, C3-C9, Chemical Synthesis, Halogenated Heterocycles,
assay   99%
bp   250-260 °C (lit.)
mp   93-96 °C (lit.)
SMILES string   Brc1cn[nH]c1
InChI   1S/C3H3BrN2/c4-3-1-5-6-2-3/h1-2H,(H,5,6)
InChI key   WVGCPEDBFHEHEZ-UHFFFAOYSA-N

Description

General description

4-Bromopyrazole is a heteroaryl halide and its cyanation in the presence of palladium catalysts has been reported.

4-Bromopyrazole is a pyrazole derivative. It is reported to react with titanium tetrachloride to afford binary adducts. Mutagenicity of 4-bromopyrazole has been tested using the L-arabinose forward mutation assay of Salmonella typhimurium. It is reported to inhibit the oxidative phosphorylation, the ATP-32P exchange reaction, and energy dependent and independent calcium uptake.

Application

4-Bromopyrazole may be used in the preparation of 4-bromo-1-(2-chloroethyl)-1H-pyrazole. It may be used as starting material in the synthesis of 1,4′-bipyrazoles.

4-Bromopyrazole may be used in the preparation of solid hexacoordinate complexes by reaction with dimethyl- and divinyl-tindichloride.

Packaging

1, 10 g in glass bottle

Safety & Documentation

Safety Information

Symbol 
GHS07  GHS07
Signal word 
Warning
Hazard statements 
Precautionary statements 
Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
3
RTECS 
UQ6200000

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Protocols & Articles
Peer-Reviewed Papers
15

References

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