1penten2yl

1penten-2-yl refers to a specific unsaturated hydrocarbon radical. It is derived from pentene, a five-carbon alkene, and specifically indicates a pentenyl group attached at the second carbon atom, with the double bond located between the first and second carbon atoms. The "1-penten" part signifies the position of the double bond starting at the first carbon, and the "2-yl" indicates that the point of attachment to another molecule is at the second carbon. This structure results in a five-carbon chain with a double bond between C1 and C2, and a free valence (the point of attachment) on C2. Therefore, the structure can be represented as CH2=C(CH3)CH2CH2CH3. This radical is an isomer of other pentenyl radicals, differing in the position of the double bond and/or the point of attachment. Its chemical properties are influenced by the presence of the double bond, making it susceptible to addition reactions, and the alkyl chain. It can participate in polymerization reactions and serve as a functional group in organic synthesis.