N butyl Bromide key concepts
The related words of n-butyl bromide
n-butyl bromide ($N - butyl bromide $) are also organic compounds. Its preparation and properties are the key concepts of chemistry research ($N - butyl bromide key concepts $).
To prepare n-butyl bromide, n-butanol and hydrobromic acid are often used as raw materials, catalyzed by sulfuric acid, through a substitution reaction. In this process, the role of sulfuric acid is not light, which can promote the ionization of hydrobromic acid, increase the concentration of bromide ions, and make the reaction smooth. And sulfuric acid is water-absorbing, which can remove the water generated by the reaction. According to the principle of Ellechatelier, it prompts the equilibrium to move in the direction of the product and improves the yield of n-butyl bro
The properties of n-butyl bromide are related to many aspects. It is a colorless and transparent liquid with a special odor and insoluble in water, but it is miscible with organic solvents such as ethanol and ether. In its molecular structure, the carbon-bromine bond is polar. Because the electronegativity of bromine is stronger than that of carbon, the electron cloud is biased towards the bromine atom, which makes the bond active and prone to nucleophilic substitution.
In the nucleophilic substitution reaction, the bromine atom of n-butyl bromide is easily attacked by the nucleophilic reagent and leaves to form new compounds. For example, when it is co-heated with an aqueous sodium hydroxide solution, the bromine atom is replaced by a hydroxyl group to form n-butanol; when it reacts with sodium cyanide, the bromine atom is replaced by a
The physical properties of n-butyl bromide are also significant in practical applications. Because it is insoluble in water and has a density greater than that of water, it can be separated from the water phase during liquid separation. Its boiling point is moderate, and it can be purified by distillation to obtain pure n-butyl bromide.
n-butyl bromide is widely used in the field of organic synthesis. It is an important intermediate for the synthesis of many organic compounds. The products derived from it are of great value in the pharmaceutical, pesticide, fragrance and other industries.
