Aromatic organic compounds consisting only of a conjugated planar ring system
Simple aromatic rings, also known as simple arenes or simple aromatics, are aromatic organic compounds that consist only of a conjugated planar ring system. Many simple aromatic rings have trivial names. They are usually found as substructures of more complex molecules ("substituted aromatics"). Typical simple aromatic compounds are benzene, indole, and pyridine.[1][2]
Simple aromatic rings can be heterocyclic if they contain non-carbon ring atoms, for example, oxygen, nitrogen, or sulfur. They can be monocyclic as in benzene, bicyclic as in naphthalene, or polycyclic as in anthracene. Simple monocyclic aromatic rings are usually five-membered rings like pyrrole or six-membered rings like pyridine. Fused/condensed[3] aromatic rings consist of monocyclic rings that share their connecting bonds.
^Clayden, J.; Greeves, N.; Warren, S.; Wothers, P. (2001). Organic Chemistry. Oxford, Oxfordshire: Oxford University Press. ISBN 0-19-850346-6.
^Eicher, T.; Hauptmann, S. (2003). The Chemistry of Heterocycles: Structure, Reactions, Syntheses, and Applications (2nd ed.). Wiley-VCH. ISBN 3-527-30720-6.
Simplearomaticrings, also known as simple arenes or simplearomatics, are aromatic organic compounds that consist only of a conjugated planar ring system...
In organic chemistry, aromaticity is a chemical property describing the way in which a conjugated ring of unsaturated bonds, lone pairs, or empty orbitals...
nucleophilic aromatic substitutions Arenes are typically split into two categories - benzoids, that contain a benzene derivative and follow the benzene ring model...
but simpler than the paclitaxel that follows, which displays a complex ring structure including 3-, 5-, and 7-membered non-aromatic, carbocyclic rings. Cycloalkanes...
low as 0.08 ppm by mass. As an aromatic hydrocarbon, naphthalene's structure consists of a fused pair of benzene rings. It is the main ingredient of traditional...
compound with the formula C4H4S. Consisting of a planar five-membered ring, it is aromatic as indicated by its extensive substitution reactions. It is a colorless...
highly soluble in water. The compound is classified as aromatic due to the presence of a planar ring containing 6 π-electrons (a pair of electrons from the...
leaving group, such as a halide, on an aromaticring. Aromaticrings are usually nucleophilic, but some aromatic compounds do undergo nucleophilic substitution...
contained multiple double bonds or multiple rings, but in these years very little was known about aromatic chemistry, and so chemists were unable to adduce...
consisting of a five-membered aromaticring with four carbon atoms and one oxygen atom. Chemical compounds containing such rings are also referred to as furans...
Benzimidazole is a heterocyclic aromatic organic compound. This bicyclic compound may be viewed as fused rings of the aromatic compounds benzene and imidazole...
classified as an aromatic heterocycle. It has a bicyclic structure, consisting of a six-membered benzene ring fused to a five-membered pyrrole ring. Indoles are...
Purine is a heterocyclic aromatic organic compound that consists of two rings (pyrimidine and imidazole) fused together. It is water-soluble. Purine also...
electrons that are delocalized over the ring. The molecule is planar and, thus, follows the Hückel criteria for aromatic systems. In contrast to benzene, the...
carbon based explosives such as CL-20. (C 2H 2B 2N 2) is a six-membered aromaticring with two carbon atoms, two nitrogen atoms, and two boron atoms in opposing...
A polycyclic aromatic hydrocarbon (PAH) is a class of organic compounds that is composed of multiple aromaticrings. The simplest representative is naphthalene...
Pyrimidine, an analog with the second nitrogen atom in position 3 Simplearomaticrings International Union of Pure and Applied Chemistry (2014). Nomenclature...
alkaloids such as papaverine. The isoquinoline ring in these natural compound derives from the aromatic amino acid tyrosine. Isoquinoline is a colorless...
Similar simplearomaticrings Isoquinoline, an analog with the nitrogen atom in position 2 Pyridine, an analog without the fused benzene ring Naphthalene...
Fateley, William G.; Grasselli, Jeanette G. (1991-01-01). "Aromatic and Heteroaromatic Rings". The Handbook of Infrared and Raman Characteristic Frequencies...
fulfills Hückel's rule of aromaticity. Each double bond and lone pair provides 2 π-electrons, which are delocalized into the ring. The cyclopentadienyl anion...
An aromatic amino acid is an amino acid that includes an aromaticring. Among the 20 standard amino acids, histidine, phenylalanine, tryptophan, tyrosine...
An aromaticring current is an effect observed in aromatic molecules such as benzene and naphthalene. If a magnetic field is directed perpendicular to...
5-triazine. Other aromatic nitrogen heterocycles are pyridines with one ring nitrogen atom, diazines with 2 nitrogen atoms in the ring, triazoles with 3...
The tropylium ion or cycloheptatrienyl cation is an aromatic species with a formula of [C7H7]+. Its name derives from the molecule tropine from which cycloheptatriene...
of the most important electrophilic aromatic substitutions are aromatic nitration, aromatic halogenation, aromatic sulfonation, alkylation Friedel–Crafts...
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