Compound containing rings with delocalized pi electrons
"Arene" redirects here. For other uses, see Arene (disambiguation).
This article is missing information about Non-benzenoid aromatic compounds. Please expand the article to include this information. Further details may exist on the talk page.(October 2022)
2D model of a benzene molecule. The carbon "ring" is what makes benzene "aromatic".
Aromatic compounds or arenes usually refers to organic compounds "with a chemistry typified by benzene" and "cyclically conjugated."[1]
The word "aromatic" originates from the past grouping of molecules based on odor, before their general chemical properties were understood. The current definition of aromatic compounds does not have any relation to their odor. Aromatic compounds are now defined as cyclic compounds satisfying Hückel's Rule.
Aromatic compounds have the following general properties:[citation needed]
Typically unreactive
Often non polar and hydrophobic
High carbon-hydrogen ratio
Burn with a strong sooty yellow flame, due to high C:H ratio
Undergo electrophilic substitution reactions and nucleophilic aromatic substitutions[2]
Arenes are typically split into two categories - benzoids, that contain a benzene derivative and follow the benzene ring model, and non-benzoids that contain other aromatic cyclic derivatives.[citation needed] Aromatic compounds are commonly used in organic synthesis and are involved in many reaction types, following both additions and removals, as well as saturation and dearomatization.
^Smith, Michael B.; March, Jerry (2007), Advanced Organic Chemistry: Reactions, Mechanisms, and Structure (6th ed.), New York: Wiley-Interscience, ISBN 978-0-471-72091-1
Aromaticcompounds or arenes usually refers to organic compounds "with a chemistry typified by benzene" and "cyclically conjugated." The word "aromatic"...
general relationship between aromaticity as a chemical property and the olfactory properties of such compounds. Aromaticity can also be considered a manifestation...
hydrocarbons (compounds composed solely of carbon and hydrogen) are divided into two classes: aromaticcompounds and aliphatic compounds (/ˌælɪˈfætɪk/;...
arrangements within the rings, carbocyclic and heterocyclic compounds may be aromatic or non-aromatic; in the latter case, they may vary from being fully saturated...
A polycyclic aromatic hydrocarbon (PAH) is a class of organic compounds that is composed of multiple aromatic rings. The simplest representative is naphthalene...
leaving group, such as a halide, on an aromatic ring. Aromatic rings are usually nucleophilic, but some aromaticcompounds do undergo nucleophilic substitution...
substituents sharing the same ring position in an intermediate compound in an electrophilic aromatic substitution. Trimethylsilyl, tert-butyl, and isopropyl...
of the most important electrophilic aromatic substitutions are aromatic nitration, aromatic halogenation, aromatic sulfonation, alkylation Friedel–Crafts...
between a diazonium compound (R−N≡N+) and another aromaticcompound that produces an azo compound (R−N=N−R’). In this electrophilic aromatic substitution reaction...
chemistry, an aromatic amine is an organic compound consisting of an aromatic ring attached to an amine. It is a broad class of compounds that encompasses...
intensity, and longevity of the aromaticcompounds, or perfume oils, used. As the percentage of aromaticcompounds increases, so does the intensity and...
presence of nitro groups in aromaticcompounds retards electrophilic aromatic substitution but facilitates nucleophilic aromatic substitution. Nitro groups...
opposed to aromaticity. Unlike aromaticcompounds, which follow Hückel's rule ([4n+2] π electrons) and are highly stable, antiaromatic compounds are highly...
of alternative medicine in which healing effects are ascribed to aromaticcompounds. Aromatherapy may be useful to induce relaxation, but there is not...
effects. Cyclic compounds can be partly or completely conjugated. Annulenes, completely conjugated monocyclic hydrocarbons, may be aromatic, nonaromatic...
assumed to be realized for a fully aromatic system. An aromaticcompound has HOMA value 1 whereas a non-aromaticcompound has value 0. For all-carbon systems...
group in the process. Aromatic substitution occurs on compounds with systems of double bonds connected in rings. See aromaticcompounds for more. Electrophiles...
desirable aromatics in the wine. Some of the identified aroma compounds include the following: Methoxypyrazine – grassy, herbaceous aroma compound associated...
Simple aromatic rings, also known as simple arenes or simple aromatics, are aromatic organic compounds that consist only of a conjugated planar ring system...
(also known as haloarene) is an aromaticcompound in which one or more hydrogen atoms, directly bonded to an aromatic ring are replaced by a halide. The...
compound is an organic compound featuring several closed rings of atoms, primarily carbon. These ring substructures include cycloalkanes, aromatics,...
Aromatic acids are a type of aromaticcompound. Included in that class are substances containing an aromatic ring and an organic acid functional group...
After electrophilic aromatic substitution, diazonium chemistry is the most frequently applied strategy to prepare aromaticcompounds. Alkanediazonium salts...
measures of the degree of unsaturation for fats and other organic compounds. Aromaticcompounds are subject to electrophilic halogenation: R−C6H5 + X2 → HX...
group in a compound, which is typically, but not always, aromatic. Aromatic substitution reactions are characteristic of aromaticcompounds and are common...
Benzimidazole is a heterocyclic aromatic organic compound. This bicyclic compound may be viewed as fused rings of the aromaticcompounds benzene and imidazole....
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