C3H4BrCl

C3H4BrCl, commonly known as **1-bromo-1-chloro-2-butene** or **1-bromo-2-chloro-1-butene**, is a halogenated hydrocarbon belonging to the class of organic compounds called haloalkenes. It is a colorless liquid with a characteristic pungent odor, often used in organic synthesis as a versatile intermediate. The compound features a carbon-carbon double bond (C=C) with bromine and chlorine atoms attached to adjacent carbon atoms, giving it distinct chemical reactivity.

This molecule is typically synthesized through the halogenation of butene derivatives, where bromine and chlorine are introduced selectively to the double bond. Its structure allows for various substitution and elimination reactions, making it useful in the preparation of more complex organic compounds. Due to its halogen substituents, C3H4BrCl exhibits moderate polarity and can participate in nucleophilic substitution and electrophilic addition reactions.

In industrial and laboratory settings, C3H4BrCl serves as a precursor for pharmaceuticals, agrochemicals, and specialty chemicals. Its reactivity stems from the presence of both bromine and chlorine, which influence its solubility in organic solvents and its tendency to undergo further functionalization. However, due to the presence of halogen atoms, the compound may pose environmental and health risks, requiring careful handling and disposal.

The physical properties of C3H4BrCl include a boiling point around 100–110°C and a density greater than water, indicating its immiscibility with aqueous solutions. Safety precautions, such as the use of protective equipment and proper ventilation, are essential when working with this compound to minimize exposure risks. Its storage should be in a cool, dry place, away from incompatible substances like strong oxidizers or reducing agents.