cis2buten2yl
cis2buten2yl refers to a specific chemical group derived from cis-2-butene. It is an unsaturated hydrocarbon radical with the chemical formula C4H7. The 'cis' designation indicates that the two methyl groups attached to the double bond are on the same side of the double bond. The '2-buten' part signifies a four-carbon chain with a double bond between the second and third carbon atoms. The 'yl' suffix denotes that it is a radical, meaning it has an unpaired electron and is therefore reactive and typically found as part of a larger molecule. This group can participate in various organic reactions, particularly addition reactions across the double bond. Its structure can be visualized as CH3-CH=C(CH3)-. This isomer is distinct from the trans2buten2yl isomer where the methyl groups are on opposite sides of the double bond.