12dichlorobutane

1,2-dichlorobutane is an organochlorine compound with the chemical formula C4H8Cl2. It is a colorless liquid with a distinct odor. This compound exists as stereoisomers due to the presence of two chiral centers. Specifically, it can exist as two pairs of enantiomers, leading to a total of four stereoisomers: (R,R)-1,2-dichlorobutane, (S,S)-1,2-dichlorobutane, (R,S)-1,2-dichlorobutane, and (S,R)-1,2-dichlorobutane. The meso compound, (R,S)-1,2-dichlorobutane, is identical to (S,R)-1,2-dichlorobutane.

1,2-dichlorobutane can be synthesized through the chlorination of but-1-ene or but-2-ene. For example, the addition of chlorine across the double bond of but-1-ene yields a mixture of stereoisomers of 1,2-dichlorobutane. It is also formed as a byproduct in certain industrial chemical processes.

This compound has limited direct applications. It can serve as a chemical intermediate in the synthesis of other organic compounds. Its reactivity stems from the presence of the two chlorine atoms, which can undergo nucleophilic substitution reactions. However, due to its potential toxicity and environmental concerns associated with organochlorine compounds, its use is generally restricted. Research into its specific properties and potential applications continues.