2-Bromo-5-nitropyridine CAS 4487-59-6

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2-Bromo-5-nitropyridine CAS 4487-59-6 Chemical Specification 

2-Bromo-5-nitropyridine CAS 4487-59-6 Chemical Properties

Melting point 139-141°C (lit.)
Boiling point 145-147°C/10mmHg(lit.)
Density 1.8727(roughestimate)
Refractive index 1.6200 (estimate)
Flash point 145-147°C/10mm
Storage conditions Inertatmosphere, 2-8°C
Solubility Chloroform, HotMethanol
MorphologyCrystallinePowder
Acidity coefficient (pKa)-3.24±0.10(Predicted)
ColorLightyellowtolightbrown

2-Bromo-5-nitropyridine CAS 4487-59-6 Application

A mixture of 1.53 g (10.94 mmol) of 2-hydroxy-5-nitropyridine, 4.1 g (12.71 mmol) of tetrabutylammonium bromide and 3.71 g (26.1 mmol) of P2O5 in 29 ml of benzene was heated at reflux Stir for 1 hour. The mixture was cooled to room temperature, the upper layer was separated by decantation, and the lower layer was triturated with benzene (3 x 6 ml). The extracts were combined with the organic phase, washed with a saturated solution of NaHCO3 and NaCl, and dried over MgSO4. The solvent was distilled off under reduced pressure, and the residue was recrystallized from petroleum ether. Yield 1.7g (48%). Mp138-139°C, (bp40-70°C).