4-Bromopyrazole

4-Bromopyrazole Structure
4-Bromopyrazole structure
Common Name 4-Bromopyrazole
CAS Number 2075-45-8 Molecular Weight 146.97
Density 1.9±0.1 g/cm3 Boiling Point 255.0±0.0 °C at 760 mmHg
Molecular Formula C3H3BrN2 Melting Point 93-96 °C(lit.)
MSDS USA Flash Point 108.0±19.8 °C
Symbol GHS07
GHS07
Signal Word Warning

A general, practical palladium-catalyzed cyanation of (hetero)aryl chlorides and bromides.

Angew. Chem. Int. Ed. Engl. 52(38) , 10035-9, (2013)

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 reac...

Structural Diversity in the Reaction of Mono- and Disubstituted Pyrazoles with Titanium Tetrachloride. Importance of Hydrogen Bonding and Trends in cis/trans Geometry of Binary Adducts with Unidentate Ligands.

Inorg. Chem. 36(20) , 4415-4420, (1997)

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-dimethylpy...

Palladium(II) complexes of pyrazolated thio/selenoethers: syntheses, structures, single source precursors of Pd4Se and PdSe nano-particles and potential for catalyzing Suzuki-Miyaura coupling.

Dalton Trans. 42(11) , 3908-18, (2013)

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...

Mutagenicity study on pyrazole, seven pyrazole derivatives, and two nitroimidazoles with the L-arabinose resistance test of Salmonella typhimurium.

Environ. Mutagen. 8(4) , 611-9, (1986)

The mutagenicity of pyrazole and seven pyrazole derivatives (4-nitropyrazole, 4-bromopyrazole, 1-methyl-4-nitropyrazole, 3,5-dimethyl-4-nitropyrazole, 1-methyl-4-bromopyrazole, 4,4'-dinitro-1, 1'-methylene-dipyrazole and 4,4'-dibromo-1,1'-methylene-dipyrazole...

Effects of pyrazole, 4-bromopyrazole and 4-methylpyrazole on mitochondrial function.

Biochem. Pharmacol. 23(2) , 203-13, (1974)

Inhibition of the oxidation of the urinary bladder carcinogen N-butyl-N-(4-hydroxybutyl)nitrosamine by pyrazole and 4-substituted pyrazoles.

Biochem. Pharmacol. 37(8) , 1642-4, (1988)

Tetrahedron 63 , 748, (2007)

Dichlorodialkyltin complexes with 4-bromopyrazole. The crystal structure of bis(4-bromopyrazole- N2)dichlorodimethyltin(IV). Casellato U, et al.

J. Organomet. Chem. 486(1-2) , 105-107, (1995)