Aromatic compounds, also known as "mono- and polycyclic aromatic hydrocarbons", are organic compounds containing one or more aromatic rings. (wikipedia.org)
The current definition of aromatic compounds does not have any relation with their odor. (wikipedia.org)
Examples of non-benzene compounds with aromatic properties are furan, a heterocyclic compound with a five-membered ring that includes a single oxygen atom, and pyridine, a heterocyclic compound with a six-membered ring containing one nitrogen atom. (wikipedia.org)
Approximately half of compounds known in the year 2000 are described as aromatic to some extent. (wikipedia.org)
Aromatic compounds play key roles in the biochemistry of all living things. (wikipedia.org)
Aromatic compounds are important in industry. (wikipedia.org)
Intermediate NH2 radicals, forming during the pyrolysis of ammonia during tobacco combustion, may react with aromatic CH groups (from compounds already present in the tobacco leaves) to form the AAs (Patrianakos, C., et. (cdc.gov)
This property led to the term "aromatic" for this class of compounds, and hence to "aromaticity" being the eventually discovered electronic property of them. (newworldencyclopedia.org)
The first known use of the word "aromatic" as a chemical term-namely, to apply to compounds that contain the phenyl radical-occurs in an article by August Wilhelm Hofmann in 1855. (newworldencyclopedia.org)
Pyridines and derivatives are compounds containing a pyridine ring, which is a six-member aromatic heterocycle which consists of one nitrogen atom and five carbon atoms. (hmdb.ca)
The compounds contain a monocyclic, bicyclic, or tricyclic aromatic ring having one, two, or three ring nitrogen atoms. (justia.com)
These are organic aromatic compounds containing a monocyclic benzene moiety carrying two methoxy groups. (foodb.ca)
Some of the enzymes which generate aromatic radicals that break down most prominent bacterial strains found were isolated and tax- the complex linkages present in lignin to compounds of lower onomically identified using 16S ribosomal RNA (rRNA) se- molecular weight. (lu.se)
The Black C was recognised unambiguously from the full range of diagnostic compounds, i.e. abundant polycyclic aromatic hydrocarbons (PAHs) such as naphthalenes, biphenyl, fluorene, phenanthrene, anthracene and pyrene, and N-containing compounds such as benzonitrile, (iso)quinoline and naphthalene carbonitriles. (pyrolyscience.com)
A few aromatic compounds dominated the NMOC emissions, primarily benzene, toluene, xylene isomers/ethylbenzene and C3-benzene. (copernicus.org)
Lignin, an aromatic macromolecule, may play an important role in that exchange, as it is the only bio based source of aromatic compounds. (scirp.org)
For instance, it could be a source of bifunctional aromatic molecules, like the monocyclic compounds catechol or guaiacol, or bifunctional oligomers. (scirp.org)
Interest in essential oils has revived in recent decades with the popularity of aromatherapy, a branch of alternative medicine that claims that essential oils and other aromatic compounds have curative effects. (entrepreneurindia.co)
Monocyclic, bicyclic and tricyclic aromatic hydrocarbons, and monocyclic compounds with one hetero atom: synthesis, reactivity and properties. (mahasarkar.co.in)
Hydrocarbons8
Hydrocarbons without an aromatic ring are called aliphatic. (wikipedia.org)
General properties of aromatic hydrocarbons: They display aromaticity The carbon-hydrogen ratio is high They burn with a strong sooty yellow flame because of the high carbon-hydrogen ratio They undergo electrophilic substitution reactions and nucleophilic aromatic substitutions The circle symbol for aromaticity was introduced by Sir Robert Robinson and his student James Armit in 1925 and popularized starting in 1959 by the Morrison & Boyd textbook on organic chemistry. (wikipedia.org)
Jet fuels consist of four families of hydrocarbons: n-alkanes, iso-alkanes, cycloalkanes, and aromatics. (biofuels-news.com)
Also presented is a series of model compound studies in which the physical properties of pure hydrocarbons (i.e., alkanes, monocyclic and dicyclic aromatics) were predicted by a similar group property approach. (vt.edu)
This standard specifies the method for determination of monocyclic aromatichydrocarbons and bicyclic aromatic hydrocarbons in petroleum petroleum fractions in the range of 50 �� C to 300 �� C boiling range by high performance liquid chromatography. (chinesestandard.net)
The precision of the method is established from the detection results of kerosene fractions having a monocyclic aromatic hydrocarbon content of 10% (mass fraction) to 25% (mass fraction) and bicyclic aromatic hydrocarbons of 0 to 7% (mass fraction). (chinesestandard.net)
Hydrocarbon5
Benzene, C 6 H 6 {\displaystyle {\ce {C6H6}}} , is the least complex aromatic hydrocarbon, and it was the first one named as such. (wikipedia.org)
Toluene is an aromatic hydrocarbon naturally present in crude petroleum and in the tolu tree. (gc.ca)
Standard test method for determination of aromatic hydrocarbon types in aviation fuels and petroleum distillates. (chinesestandard.net)
This standard applies to the determination of aviation fuels and their fractions with a monocyclic aromatic hydrocarbon content of 10% (mass fraction) to 25% (mass fraction) and a bicyclic aromatic hydrocarbon content of 0 to 7% (mass fraction). (chinesestandard.net)
It is a relatively simple heterocyclic aromatic organic compound that is structurally related to benzene, with one CH group in the six-membered ring replaced by a nitrogen atom. (hmdb.ca)
Molecules2
The word "aromatic" originates from the past grouping of molecules based on odor, before their general chemical properties were understood. (wikipedia.org)
16S lignin-derived mixtures of aromatic molecules. (lu.se)
Lignin2
These results contribute to a better more biomass-derived carbohydrates are also used for produc- understanding of the aromatic metabolism of P. putida in tion of chemicals, a further valorization of lignin is an essential terms of growth and uptake rates, which will be helpful for component. (lu.se)
However, no process for the production of aromatics from lignin in technical scale has been established until now. (scirp.org)
They are used, for example, for the extraction of butadiene from C 4 fractions, of acetylene from C 2 cracking fractions and of aromatics from aliphatics. (justia.com)
The molecule heme contains an aromatic system with 22 π-electrons. (wikipedia.org)
It is the only bio based macro molecule which contains aromatic structures. (scirp.org)
Carbon1
This commonly-seen model of aromatic rings, namely the idea that benzene was formed from a six-membered carbon ring with alternating single and double bonds (cyclohexatriene), was developed by Friedrich August Kekulé von Stradonitz . (newworldencyclopedia.org)
Types1
The two main types are electrophilic aromatic substitution, when the active reagent is an electrophile, and nucleophilic aromatic substitution, when the reagent is a nucleophile. (wikipedia.org)
Chemical1
Ironically, many of the most odoriferous organic substances known are terpenes, which are not aromatic in the chemical sense. (newworldencyclopedia.org)
Similar1
Chlorophyll also has a similar aromatic system. (wikipedia.org)
Moiety2
These are aromatic compounds that contain a o-xylene moiety, which is a monocyclic benzene carrying exactly two methyl groups at the 1- and 2-positions. (drugbank.com)
These are aromatic compounds containing a meta-cresol moiety, which consists of a benzene ring bearing a methyl group and a hydroxyl group at ring positions 1 and 3, respectively. (foodb.ca)
Polycyclic2
These are polycyclic compounds that is either a polyphenolic compound composed of two or more monocyclic aromatic units linked by an ester bond (depside), or a compound containing the depsidone structure (depsidone). (foodb.ca)
In such cases the vascular system is said to be polycyclic in contrast with the ordinary monocyclic condition, These internal strands or cylinders are to be regarded as peculiar types of elaboration of the stele, and probably act as reservoirs for water-storage which can be drawn upon when the water supply from the root is deficient. (yourdictionary.com)
Ketone1
Together with identification of main active substances, their quantitative content was determined, including acyclic terpene alcohol β-linalool, acyclic terpene ketone linalyl acetate, monocyclic terpenes: D-limonene and γ-terpinene, monocyclic aromatic terpene thymol. (waset.org)
Terpenes1
Many plants contain aromatic compounds known as terpenes, but cannabis has become more popular with them due to the high concentrations found in the plant. (trans4mind.com)
Smoking tobacco and inhaling SHS may be major sources of exposure to several aromatic amines (AAs) (Bryant, et. (cdc.gov)
Compounds known1
Approximately half of compounds known in the year 2000 are described as aromatic to some extent. (wikipedia.org)
Odor2
The word "aromatic" originates from the past grouping of molecules based on odor, before their general chemical properties were understood. (wikipedia.org)
The current definition of aromatic compounds does not have any relation with their odor. (wikipedia.org)
Arene1
In aromatic substitution one substituent on the arene ring, usually hydrogen, is replaced by another substituent. (wikipedia.org)
The less basic aromatic amines needed longer reaction time although the yields are comparable to the more basic amino compounds. (springeropen.com)
PMID- 214394 TI - Mechanism of aromatic hydroxylation : the kinetic mechanism & the involvement of superoxide anions in the reaction catalyzed by m-hydroxybenzoate-4-hydroxylase from Aspergillus niger (UBC-814). (nih.gov)
Important1
Aromatic compounds are important in industry. (wikipedia.org)
System2
Chlorophyll also has a similar aromatic system. (wikipedia.org)
These are aromatic compounds containing one monocyclic ring system consisting of benzene. (presenternet.com)
Groups1
Intermediate NH2 radicals, forming during the pyrolysis of ammonia during tobacco combustion, may react with aromatic CH groups (from compounds already present in the tobacco leaves) to form the AAs (Patrianakos, C., et. (cdc.gov)
Active2
The two main types are electrophilic aromatic substitution, when the active reagent is an electrophile, and nucleophilic aromatic substitution, when the reagent is a nucleophile. (wikipedia.org)
In radical-nucleophilic aromatic substitution, the active reagent is a radical. (wikipedia.org)