From left to right: the two isomeric groups propyl and 1-methylethyl (iPr or isopropyl), and the non-isomeric cyclopropyl group.
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).
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.
In organic chemistry, a propylgroup is a three-carbon alkyl substituent with chemical formula −CH2CH2CH3 for the linear form. This substituent form is...
Propylparaben is the n-propyl ester of p-hydroxybenzoic acid. It occurs as a natural substance found in many plants and some insects. Additionally, it...
Its structure is a cyclic trimer, with a phosphorus–oxygen core and propylgroups and additional oxygens attached. The chemical is a useful reagent for...
unambiguously indicate an alkyl group) Me for the methyl group Et for the ethyl group Pr, n-Pr, or nPr for the (normal) propylgroup (Pr is also the symbol for...
Alkyl groups form homologous series. The simplest series have the general formula −CnH2n+1. Alkyls include methyl, (−CH3), ethyl (−C2H5), propyl (−C3H7)...
been encountered, with the n-propylgroup of PCPr replaced by a 2-methoxyethyl, 2-ethoxyethyl or 3-methoxypropyl group to form PCMEA, PCEEA and PCMPA...
Enantiomers of imidazole [1,4] diazepines with either a methyl group (CH3) or a propylgroup attached enhance the binding affinity towards human dopamine...
thiazole orange, which has a methyl group attached to the charged nitrogen, whereas SYBR Safe has an N-propylgroup. Thiazole Orange has been shown to...
propynyl group is a propyl bearing a triple bond. The 1-propynyl group has the structure CH3-C≡C–R. The 2-propynyl group is also known as a propargyl group, and...
Propyl hexanoate (C9H18O2), also known as propyl caproate, is an ester formed by the reaction of propanol with hexanoic acid. Although it is a completely...
hydrocarbyl group names that end in -yl are not acyl groups, but alkyl groups derived from alkanes (methyl, ethyl, propyl, butyl), alkenyl groups derived...
p. 749. ISBN 9780911910278. Logsden, John E.; Loke, Richard A. (1999). "Propyl Alcohols". In Kroschwitz, Jacqueline I. (ed.). Kirk-Othmer Concise Encyclopedia...
install an iso-propylgroup. This method would be highly adaptable in this application for diversification and installing other alkyl groups to enable structure-activbity...
group, or phenyl ring, is a cyclic group of atoms with the formula C6H5, and is often represented by the symbol Ph (archaically φ). The phenyl group is...
In formulas, the group is often abbreviated as Me. This hydrocarbon group occurs in many organic compounds. It is a very stable group in most molecules...
In chemistry, a hydroxy or hydroxyl group is a functional group with the chemical formula −OH and composed of one oxygen atom covalently bonded to one...
In organic chemistry, an ethyl group (abbr. Et) is an alkyl substituent with the formula −CH2CH3, derived from ethane (C2H6). Ethyl is used in the International...
For organic chemistry, a carbonyl group is a functional group with the formula C=O, composed of a carbon atom double-bonded to an oxygen atom, and it...
cm-1, which are weaker and overlap with C-C and C-H modes. For the case of propyl amine, the H-N-H scissor mode appears near 1600 cm-1, the C-N stretch near...
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