Allyyliryhmällä

Allyyliryhmällä is a Finnish term referring to the allyl group, a functional group in organic chemistry with the chemical formula H2C=CH-CH2-. It is characterized by a double bond adjacent to a methylene group. The allyl group is derived from propene by the removal of one hydrogen atom from a methyl group. It is a reactive moiety due to the presence of the double bond and the allylic carbon, which is prone to substitution reactions. Allylic rearrangements are common, where the double bond can migrate to the adjacent carbon. This group is a building block in the synthesis of various organic compounds, including polymers, pharmaceuticals, and agrochemicals. Examples include allyl alcohol, allyl chloride, and diallyl phthalate. The term "allyyliryhmällä" is the adessive case of "allyyliryhmä" (allyl group) in Finnish, indicating possession or accompaniment, often used in phrases like "molekyyli, jossa on allyyliryhmällä" (a molecule with an allyl group).