Isopropynyyliryhmä

Isopropynyyliryhmä refers to a chemical functional group characterized by a three-carbon chain containing a triple bond between two of the carbons, with the third carbon attached to a larger molecule. The structure can be visualized as a methyl group (CH3) attached to an ethynyl group (C≡CH). This results in a propargyl group (CH≡C-CH2-) where one hydrogen on the methylene carbon has been replaced by a methyl group. The IUPAC nomenclature for this group is 1-methylprop-2-yn-1-yl. It is an unsaturated hydrocarbon fragment derived from propyne. The presence of the triple bond makes this group reactive and capable of undergoing various addition reactions, such as hydrogenation, halogenation, and cycloadditions. It can also participate in coupling reactions like the Sonogashira coupling. Isopropynyyliryhmä can be found in various organic compounds, often used as a building block in organic synthesis due to its specific reactivity. Its physical and chemical properties are largely influenced by the alkyne functionality.