In organic chemistry, a propyl group is a three-carbonalkylsubstituent with chemical formula−CH2CH2CH3 for the linear form. This substituent form is obtained by removing one hydrogen atom attached to the terminal carbon of propane.[1] A propyl substituent is often represented in organic chemistry with the symbol Pr (not to be confused with the element praseodymium).
From left to right: the two isomeric groups propyl and 1-methylethyl (iPr or isopropyl), and the non-isomeric cyclopropyl group.
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 cyclopropyl, or c-propyl[citation needed]. It is not isomeric with the other two forms, having a different chemical formula (−C3H5 vs −C3H7), not just a different connectivity of the atoms.
propyl, group, organic, chemistry, propyl, group, three, carbon, alkyl, substituent, with, chemical, formula, ch2ch2ch3, linear, form, this, substituent, form, obtained, removing, hydrogen, atom, attached, terminal, carbon, propane, propyl, substituent, often,. In organic chemistry a propyl group is a three carbon alkyl substituent with chemical formula CH2CH2CH3 for the linear form This substituent form is obtained by removing one hydrogen atom attached to the terminal carbon of propane 1 A propyl substituent is often represented in organic chemistry with the symbol Pr not to be confused with the element praseodymium From left to right the two isomeric groups propyl and 1 methylethyl iPr or isopropyl and the non isomeric cyclopropyl group 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 cyclopropyl or c propyl citation needed It is not isomeric with the other two forms having a different chemical formula C3H5 vs C3H7 not just a different connectivity of the atoms Examples editn Propyl acetate is an ester which has the n propyl group attached to the oxygen atom of the acetate group nbsp Chemical structure of propyl acetate Other examples edit Isopropyl alcohol IsopropylamineReferences edit a b IUPAC Nomenclature Acyclic Hydrocarbons Rule A 1 Retrieved 2022 07 31 IUPAC Nomenclature Acyclic Hydrocarbons Rule A 2 Retrieved 2022 07 31 Retrieved from https en wikipedia org w index php title Propyl group amp oldid 1185935885, wikipedia, wiki, book, books, library,
