374822
4-Bromopyrazole
99%
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About This Item
Formule empirique (notation de Hill):
C3H3BrN2
Numéro CAS:
Poids moléculaire :
146.97
Numéro MDL:
Code UNSPSC :
12352100
ID de substance PubChem :
Nomenclature NACRES :
NA.22
Produits recommandés
Pureté
99%
Forme
solid
Point d'ébullition
250-260 °C (lit.)
Pf
93-96 °C (lit.)
Chaîne SMILES
Brc1cn[nH]c1
InChI
1S/C3H3BrN2/c4-3-1-5-6-2-3/h1-2H,(H,5,6)
Clé InChI
WVGCPEDBFHEHEZ-UHFFFAOYSA-N
Description générale
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.
Mention d'avertissement
Warning
Mentions de danger
Conseils de prudence
Classification des risques
Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
Organes cibles
Respiratory system
Code de la classe de stockage
11 - Combustible Solids
Classe de danger pour l'eau (WGK)
WGK 3
Point d'éclair (°F)
Not applicable
Point d'éclair (°C)
Not applicable
Équipement de protection individuelle
dust mask type N95 (US), Eyeshields, Gloves
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Les clients ont également consulté
Ilia A. Guzei et al.
Inorganic chemistry, 36(20), 4415-4420 (2001-10-24)
Treatment of titanium tetrachloride with 3,5-di-tert-butylpyrazole affords the complexes [3,5-(C(CH(3))(3))(2)C(3)H(3)N(2)](2)[TiCl(6)] and (3,5-(C(CH(3))(3))(2)C(3)HN(2))(2)TiCl(2) in 37 and 42% yields, respectively. An analogous reaction with 3,5-dimethylpyrazole, 3-methylpyrazole, 4-bromopyrazole, and 4-iodopyrazole leads to the formation of corresponding TiCl(4)L(2) binary adducts in 30-86% yields. Crystal
Kamal Nayan Sharma et al.
Dalton transactions (Cambridge, England : 2003), 42(11), 3908-3918 (2013-01-19)
The reactions of 4-bromo-1-(2-chloroethyl)-1H-pyrazole prepared from 4-bromopyrazole with the in situ generated PhSNa, PhSeNa, Na(2)S and Na(2)Se have resulted in thio/selenoether ligands L1-L4 respectively. The complexes [PdL1/L2Cl(2)](1-2) and [PdL3/L4Cl]BF(4) (3-4) of these ligands have been synthesized by reacting them with
Todd D Senecal et al.
Angewandte Chemie (International ed. in English), 52(38), 10035-10039 (2013-08-13)
Playing it safe: The nontoxic cyanide source K4 [Fe(CN)6]·3H2O can be used for the cyanation of (hetero)aryl halides. The application of palladacycle catalysts prevents poisoning during catalyst formation, thereby allowing for low catalyst loadings, fast reaction times, and wide heterocyclic
Effects of pyrazole, 4-bromopyrazole and 4-methylpyrazole on mitochondrial function.
A I Cederbaum et al.
Biochemical pharmacology, 23(2), 203-213 (1974-01-15)
Graham A Cooper et al.
The Journal of chemical physics, 147(21), 214303-214303 (2017-12-10)
The combination of halogen- and hydrogen-bonding capabilities possessed by 4-bromopyrazole and 4-iodopyrazole has led to them being described as "magic bullets" for biochemical structure determination. Laser vaporisation was used to introduce each of these 4-halopyrazoles into an argon gas sample
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