Propyl group
In
An isomeric form of propyl is obtained by moving the point of attachment from a terminal carbon atom to the central carbon atom, named isopropyl or 1-methylethyl. To maintain four substituents on each carbon atom, one hydrogen atom has to be moved from the middle carbon atom to the carbon atom which served as attachment point in the n-propyl variant, written as −CH(CH3)2.[2]
Linear propyl is sometimes termed normal and hence written with a prefix n- (i.e., n-propyl), as the absence of the prefix n- does not indicate which attachment point is chosen, i.e. absence of prefix does not automatically exclude the possibility of it being the branched version (i.e. i-propyl[citation needed] or isopropyl).[1][failed verification] In addition, there is a third, cyclic, form called
Examples
n-Propyl acetate is an ester which has the n-propyl group attached to the oxygen atom of the acetate group.
Other examples
References
- ^ a b "IUPAC Nomenclature - Acyclic Hydrocarbons Rule A-1". Retrieved 2022-07-31.
- ^ "IUPAC Nomenclature - Acyclic Hydrocarbons Rule A-2". Retrieved 2022-07-31.