propynes

A propyne is an organic compound with the chemical formula C3H4. It is a simple alkyne, meaning it contains a carbon-carbon triple bond. Specifically, the triple bond is located between the first and second carbon atoms, with a methyl group attached to the third carbon. The systematic name for propyne is prop-1-yne. Its isomer, allene (propadiene), has the formula C3H4 as well, but features a cumulative double bond system. Propyne is a colorless gas at room temperature and pressure. It is flammable and can be explosive when mixed with air.

The synthesis of propyne can be achieved through various methods, including the dehydrohalogenation of dihalopropanes or the reaction of methylacetylene with certain reagents. Propyne is a reactive molecule due to the presence of the triple bond, which readily undergoes addition reactions. These reactions include hydrogenation to form propane or propene, and halogenation. It can also participate in cycloaddition reactions. Propyne finds limited direct industrial applications, but it serves as a building block in organic synthesis for the preparation of more complex molecules. Its handling requires caution due to its flammability and explosive potential.