CH3CHCCH3

CH3CHCCH3, also known as 2-butyne, is an organic compound with the chemical formula C4H6. It is an alkyne, characterized by the presence of a carbon-carbon triple bond. In 2-butyne, this triple bond is located between the second and third carbon atoms of a four-carbon chain. The molecule is symmetrical, with methyl groups (CH3) attached to each carbon atom involved in the triple bond.

2-butyne is a colorless liquid at room temperature and pressure. It is a flammable substance and has a characteristic odor. Like other alkynes, it undergoes addition reactions across the triple bond. For example, it can react with hydrogen in the presence of a catalyst to form alkenes and then alkanes. It can also react with halogens and hydrogen halides.

This compound finds limited direct industrial applications. However, it serves as a useful intermediate in organic synthesis. Its symmetrical structure and reactive triple bond make it a versatile building block for creating more complex organic molecules. It is sometimes used in research laboratories for studying alkyne chemistry and developing new synthetic methodologies. 2-butyne is typically prepared through reactions involving appropriate halogenated hydrocarbons or via dimerization of smaller alkynes.