Isobutyyliryhmän

Isobutyyliryhmä is the Finnish term for the isobutyl group. In organic chemistry, the isobutyl group is a branched alkyl group with the formula -CH(CH3)2CH2. It is derived from isobutane by removing one hydrogen atom. The isobutyl group is a substituent, meaning it is attached to a larger molecule. Its structure consists of a central carbon atom bonded to one hydrogen atom, two methyl groups, and a methylene group (-CH2-). This methylene group is the point of attachment to the rest of the molecule. The isobutyl group is isomeric with the n-butyl, sec-butyl, and tert-butyl groups, all of which have the same molecular formula C4H9 but differ in their connectivity. The isobutyl group is commonly found in various organic compounds, including pharmaceuticals, flavorings, and polymers. Its presence can influence the physical and chemical properties of a molecule, such as solubility, reactivity, and steric hindrance. For example, it can increase lipophilicity compared to a straight-chain alkyl group of similar size. In systematic nomenclature, the isobutyl group is sometimes abbreviated as "i-Bu".