Isobutyyliryhmässä

Isobutyyliryhmä is the Finnish term for the isobutyl group. In organic chemistry, the isobutyl group is a branched alkyl group with the chemical formula (CH₃)₂CHCH₂-. It is derived from isobutane by removing one hydrogen atom from the methyl group. It is one of the four isomers of the butyl group, the others being n-butyl, sec-butyl, and tert-butyl. The isobutyl group is characterized by a central carbon atom bonded to two methyl groups and one methylene group. This methylene group is then attached to the rest of the molecule. It is a common substituent found in many organic compounds, influencing their physical and chemical properties such as solubility and reactivity. For example, it is present in the structure of the amino acid valine and in some pharmaceuticals. The branching in the isobutyl group leads to different steric and electronic effects compared to its linear isomer, the n-butyl group.