propüülrühmad
Propüülrühmad, also known as propyl groups, are univalent alkyl radicals derived from propane by the removal of one hydrogen atom. The chemical formula for a propüülrühm is C3H7. They are a common structural feature in organic chemistry, appearing as substituents in larger molecules. There are two possible isomers for the propüülrühm, depending on which carbon atom the hydrogen is removed from propane. The first isomer is the n-propyl group, where the hydrogen is removed from one of the terminal carbon atoms of propane. Its structure can be represented as -CH2CH2CH3. The second isomer is the isopropyl group, where the hydrogen is removed from the central carbon atom of propane. Its structure can be represented as -CH(CH3)2. Both propüülrühmad are saturated hydrocarbon fragments and are therefore relatively unreactive. They contribute to the lipophilicity of molecules and can influence their physical properties such as boiling point and solubility. Propyl groups are frequently encountered in the nomenclature of organic compounds, such as in propanol (which can exist as 1-propanol with an n-propyl group or 2-propanol with an isopropyl group) or propyl acetate.