R2bromobutane

2-Bromobutane, also known as sec-butyl bromide, is an organobromine compound with the chemical formula CH3CHBrCH2CH3. It is a colorless liquid at room temperature and pressure. This compound is a secondary alkyl halide, meaning the bromine atom is attached to a carbon atom that is bonded to two other carbon atoms. 2-Bromobutane is isomeric with 1-bromobutane, 2-bromobutane, and tert-butyl bromide.

2-Bromobutane can be synthesized through the reaction of 2-butanol with hydrobromic acid or phosphorus tribromide. It is a common reagent in organic synthesis, often employed in nucleophilic substitution reactions and elimination reactions. For instance, it can undergo SN2 reactions with various nucleophiles to form new carbon-heteroatom bonds. Under basic conditions, it can also undergo E2 elimination to form butenes.

The compound is soluble in many organic solvents but has limited solubility in water. Its physical properties include a boiling point of approximately 97 degrees Celsius and a density slightly greater than water. 2-Bromobutane is flammable and should be handled with appropriate safety precautions. It is important to store it in a cool, well-ventilated area away from ignition sources.

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