Amines. Medical search. Frequent questions

Benzidines and aromatic amines contain nitrogen atoms inside or attached to benzene-type rings. (cdc.gov)
Aromatic amines are used in insecticides or in polymer production. (cdc.gov)
Aromatic amines have the nitrogen atom connected to an aromatic ring as in anilines . (newworldencyclopedia.org)
The aromatic ring strongly decreases the basicity of the amine, depending on its substituents. (newworldencyclopedia.org)
Interestingly, the presence of an amine group strongly increases the reactivity of the aromatic ring, due to an electron-donating effect. (newworldencyclopedia.org)
One organic reaction involving aromatic amines is the Goldberg reaction. (newworldencyclopedia.org)
The aromatic amines, such as aniline , have their lone pair electrons conjugated into the benzene ring, thus their tendency to engage in hydrogen bonding is diminished. (newworldencyclopedia.org)
Well-defined Co(II) complexes stabilized by a PCP ligand catalyze efficient alkylations of aromatic amines by primary alcohols into mono- N -alkylated amines in very good yields. (organic-chemistry.org)
Commercially available [(PPh 3 ) 2 NiCl 2 ] is an efficient catalyst for the mono- N -alkylation of (hetero)aromatic amines, employing alcohols to deliver diverse secondary amines in excellent yields via the borrowing hydrogen strategy. (organic-chemistry.org)
The addition of 4 molecular sieves enables an efficient cobalt(II)-catalyzed N-alkylation of both aromatic and aliphatic amines with alcohols with high chemoselectivity (amines vs imines). (organic-chemistry.org)
A monobenzylation of aromatic amines with benzylic alcohols in good yields proceeds under MW conditions in the presence of SmI 2 as a catalyst with the generation of water as the sole byproduct. (organic-chemistry.org)
Aromatic amine moiety as a side group was introduced into main core structure in order to prevent intermolecular interaction and improve hole mobility [ 12 ]. (springer.com)
The International Agency for Research on Cancer (IARC) is pleased to announce that the IARC Monographs volume on some aromatic amines and related compounds is now available online. (who.int)

Secondary amines have two organic substituents bound to N together with one H. In tertiary amines all three hydrogen atoms are replaced by organic substituents. (newworldencyclopedia.org)
Usually, this approach is used with protected or tertiary amines as substrates. (chemistryviews.org)
The primary fatty amines are estimated to witness the fastest growth owing to its quality of being used as a basic raw material to produce secondary and tertiary amines, which is anticipated to drive the growth of this product in the forthcoming years. (grandviewresearch.com)
Additionally, tertiary amines are used as ore floatation, fuel additives, chemical intermediate, and corrosion inhibitors , accelerating the demand for tertiary fatty amines. (grandviewresearch.com)
Moreover, tertiary fatty amines have emerged as the largest application segment owing to the significant rise in demand for the product from developed and developing economies due to its wide-ranging abilities. (grandviewresearch.com)
Based on the product, the market is trifurcated into primary, secondary, and tertiary fatty amines. (grandviewresearch.com)
The tertiary fatty amines are used as the most significant raw material to manufacture amphoteric, cationic, and non-cationic surfactants including oxides and quaternary ammonium compounds. (grandviewresearch.com)
Secondary and tertiary fatty amines are derived from primary amines, which is why it is very essential in different verticals. (grandviewresearch.com)
Design and assembly of new nonviral RNAi delivery agents by microwave-assisted quaternization (MAQ) of tertiary amines. (bvsalud.org)
Here, we report the first design and synthesis of new cholesterol -conjugated cationic lipids for RNAi delivery using microwave -assisted quaternization (MAQ) of tertiary amines . (bvsalud.org)

4. Histamine and Other Biogenic Amines in Food. (intechopen.com)
1 However, high levels of biogenic amines in food can indicate microbial spoilage. (kemin.com)

A multi-targeted LC-MS/MS method for sympathomimetic amines and related drugs in urine detected and quantified 2C-I and MDA, while ruling out MDMA. (erowid.org)

Daniel Seidel, University of Florida, Gainesville, USA, and colleagues have developed a method for the regioselective α'-cyanation of unprotected cyclic amines that have a pre-existing substituent in the other α position (example product pictured). (chemistryviews.org)
Values for the negative logarithm of the acid dissociation constant, pKa, of the conjugated acid of amines, diamines and cyclic organic nitrogen compounds, shown together with the molecular structure of the acids. (engineeringtoolbox.com)

An efficient, metal and base-free, chemoselective reaction of boronic acids with cyanamidyl/arylcyanamidyl radicals provides primary aryl-, heteroaryl-, and alkyl amines at ambient temperature within 1 h. (organic-chemistry.org)

Most aliphatic amines display some solubility in water, reflecting their ability to form hydrogen bonds. (newworldencyclopedia.org)
Aliphatic amines display significant solubility in organic solvents , especially polar organic solvents. (newworldencyclopedia.org)
A broad range of anilines and more challenging aliphatic amines were alkylated with primary and secondary alcohols. (organic-chemistry.org)

The analogous coupling of aniline with primary amines formed aryl-substituted secondary amines. (organic-chemistry.org)

Amines are organic compounds and a type of functional group that contain nitrogen as the key atom. (newworldencyclopedia.org)
Furthermore, these silica based solid amines exhibit a low working capacity for water vapor, which allows for significant water vapor to pass through the bed and exit in the light product along with most of the nitrogen. (aiche.org)
Fatty amines are nitrogen byproducts of olefins, alcohols, or unsaturated fats that are obtained from normal sources, petrochemical unrefined materials, and fats and oils. (grandviewresearch.com)
The presence of amines did not seriously affect the mass spectral intensities of nitrogen- trichloride. (cdc.gov)

Thus the boiling point of amines is higher than those for the corresponding phosphines, but generally lower than the corresponding alcohols . (newworldencyclopedia.org)
Alcohols, or alkanols, resemble amines but feature an -OH group in place of NR 2 . (newworldencyclopedia.org)
A highly active Mn(I) pincer catalyst enables an atom-economic and highly efficient N-alkylation of amines with alcohols utilizing the borrowing hydrogen methodology. (organic-chemistry.org)
Imines and secondary amines were synthesized selectively by a Pd-catalyzed one-pot reaction of benzyl alcohols with primary amines. (organic-chemistry.org)
The reactions did not require any additives and were effective for a wide range of alcohols and amines. (organic-chemistry.org)
A protocol for the dehydrative amination of alcohols in water using a water-soluble calix[4]resorcinarene sulfonic acid as a reusable multifunctional catalyst allows an environmentally benign synthesis of benzylic and allylic amines. (organic-chemistry.org)
A catalytic amount of manganese dioxide and solvent-free conditions under air enabled a practical and efficient N -alkylation method for a variety of sulfonamides and amines using alcohols as green alkylating reagents. (organic-chemistry.org)
The industrially available fatty amines are manufactured by either refining of unsaturated fats or when fatty alcohols are responded with ammonia or essential, secondary amines. (grandviewresearch.com)

Structurally amines resemble ammonia , wherein one or more hydrogen atoms are replaced by organic substituents such as alkyl and aryl groups. (newworldencyclopedia.org)
As displayed in the images below, primary amines arise when one of three hydrogen atoms in ammonia is replaced by an organic substituent. (newworldencyclopedia.org)
Gaseous amines possess a characteristic ammonia smell, liquid amines have a distinctive "fishy" smell. (newworldencyclopedia.org)
Amines are organic chemical compounds derived from ammonia. (cepsa.com)

The treatment of gas with aqueous amine solutions involves a set of processes that remove hydrogen sulfide (H2S) and carbon dioxide (CO2) from gases, thus reducing their impact on the environment. (cepsa.com)

An important exception to this rule is that compounds of the type RC(O)NR 2 , where the C(O) refers to a carbonyl group, are called amides rather than amines. (newworldencyclopedia.org)
Biogenic amines are compounds formed during the normal metabolic functions of plants and animals. (kemin.com)
The secondary fatty amines are mainly used as intermediates for the preparation of difatty dimethyl quaternary ammonium compounds, which is anticipated to witness huge demand in various end-use industries. (grandviewresearch.com)
This report demonstrates the utility of testing for a wider menu of compounds using LC-MS/MS in order to better characterize the prevalence and toxicities of novel amines such as 2C-I. (erowid.org)

Hydrogen bonding significantly influences the properties of primary and secondary amines as well as the protonated derivatives of all amines. (newworldencyclopedia.org)

Amides and amines have different structures and properties, so the distinction is chemically important. (newworldencyclopedia.org)
Somewhat confusing is the fact that amines in which an N-H group has been replaced by an N-M group (M = metal) are also called amides. (newworldencyclopedia.org)
The team first converted the amine substrates to lithium amides using n -BuLi. (chemistryviews.org)

The global fatty amines market size was value at 3.4 billion in 2018 and is expected to expand at a CAGR of 5.0% over the forecast period. (grandviewresearch.com)

A Chan-Lam coupling reaction of benzylic and allylic boronic esters with primary and secondary anilines provides valuable alkyl amine products. (organic-chemistry.org)

Primary amines react with ketones such as acetone , and most amines are incompatible with chloroform and carbon tetrachloride. (newworldencyclopedia.org)
Structural resemblance with substances which possess important pharmacological properties motivated the synthesis of a series of ketones and a small library of amines. (lu.se)

The reaction showed a broad scope and proved suitable for the α-cyanation of simple amines such as pyrrolidine or piperidine and for the α'-cyanation of a range of amines with an existing α-substituent. (chemistryviews.org)

Solid amines are comprised of an adsorbent material, like silica gel, that contains an amine based organic compound, either physically or chemically, attached within its pores. (aiche.org)

8 This index shows biogenic amine content in a food product and can be used to indicate freshness or spoilage. (kemin.com)
With the amine absorber we have been able to reduce the sulfur content of the gas recovered from the Manufacturing I torch and reduce atmospheric SO2 emissions. (cepsa.com)

Not all biogenic amines have toxic effects and toxicity can vary based on the person or animal affected. (kemin.com)

This method provides access to a broad range of chiral α-branched primary amines and linear primary amines. (organic-chemistry.org)

6 Histamine, tyramine, cadaverine, putrescine, spermine and spermidine are biogenic amines with potential toxicity effects in animals when ingested at high levels. (kemin.com)
Four phenolic amines (N-methyl-β-phenethylamine, tyramine, N-methyltyramine, and hordenine), had previously been extracted from the plant, and N-methyl-β-phenethylamine has been shown to negatively impact fertility in female Angora goats. (erowid.org)

Biogenic amines (BAs) are low-molecular-mass organic bases that occur in plant- and animal-derived products. (intechopen.com)
high molecular weight amines are, of course, solids. (newworldencyclopedia.org)

Higher amines have the prefix amino as a functional group. (newworldencyclopedia.org)
Quality assessment of fresh meat from several species based on free amino acid and biogenic amine contents during chilled storage. (kemin.com)

The coating was made up of two components mixed shortly before application, the first mainly consisting of bisphenol A diglycidyl ether (BADGE), the second of various amines. (who.int)

Which functional group does not contain oxygen amine alcohol ester ketone? (answers.com)

Rayan El Amine is a writer and journalist from Beirut. (thebaffler.com)

Dear Librarian, I would like to recommend the following IntechOpen book to be added to our library catalog: TITLE: 'Biogenic Amines' PRINT ISBN: 978-1-78984-133-6 Libraries are offered a 20% discount on retail book prices. (intechopen.com)

There is a shortage of literature evaluating the precise effect of biogenic amines on dogs and cats due to ethical reasons. (kemin.com)

The presence of this amine makes the silica gel almost exclusively selective to CO 2 . (aiche.org)

Growing up in Morocco and Algeria, Senior Manager Amine Lamdaouar saw first-hand how important it was for people to gain access to clean water, energy sources and infrastructure. (deloitte.com)

1 Many amines play important roles in human and animal physiological functions, 2,3 but a high accumulation of biogenic amines ingested from food can become a health hazard. (kemin.com)
Cold storage can prevent microbial growth in products that are fresh, but if a product endures high temperatures before freezing, amines can form and continue to form once cooled. (kemin.com)

Pet food manufacturers should control biogenic amine formation in raw materials and finished products to avoid detrimental effects to the food or pet consuming it. (kemin.com)

Once biogenic amines are formed, they are heat stable and cannot be destroyed by processing methods such as cooking, baking or canning. (kemin.com)

One member of this class of amine is tert-octylamine, H2NC(CH3)2(CH2)4CH3. (wikipedia.org)
Amir Amine is a member of Creative Cloud. (behance.net)

Fatty amines are majorly used in the paints and coatings industry as they offer multinational performance properties and act as epoxy curing agents. (grandviewresearch.com)

Our previously-obtained impressive results of highly increased C2C12 mouse myoblast adhesion to amine plasma polymers (PPs) motivated current detailed studies of cell resistance to trypsinization, cell proliferation, motility, and the rate of attachment carried out for fibroblasts (LF), keratinocytes (HaCaT), rat vascular smooth muscle cells (VSMC), and endothelial cells (HUVEC, HSVEC, and CPAE) on three different amine PPs. (nature.com)
Based on all the results, the increased resistance to trypsinization of C2C12, LF, HaCaT, and VSMC cells on amine PPs can be explained most probably by a non-specific cell adhesion such as electrostatic interaction between the cells and amine groups on the material surface, rather than by the receptor-mediated adhesion through serum-derived proteins adsorbed on the PPs. (nature.com)

The mobile filter skid system provides an efficient method of removing harmful solids to protect and extend equipment life, and maximize glycol, amine systems' effectiveness. (pall.com)

In our present presentation, two biogenic amine systems were selected as examples of biomarkers for neurotoxicity. (erowid.org)
Options were explored for fulfilling the legally required safety assessment for a widely applied epoxy/amine coating used for restoring corroded domestic drinking water supply systems. (who.int)

To evaluate product freshness, pet food manufacturers can use the Biogenic Amine Index. (kemin.com)

Chemicals and Drugs61

Analytical, Diagnostic and Therapeutic Techniques and Equipment3

Phenomena and Processes12

Technology, Industry, Agriculture1

Aromatic13

Tertiary10

Biogenic Amines in Food2

SYMPATHOMIMETIC AMINES1

Cyclic2

Alkyl amines1

Aliphatic amines3

Aniline1

Nitrogen4

Alcohols8

Ammonia4

Aqueous1

Compounds4

Derivatives1

Amides3

20181

Primary and secondary1

Ketones2

Piperidine1

Organic compound1

Content2

Toxic1

Chiral1

Tyramine2

Molecular2

Amino2

Badge1

Functional group1

Beirut1

Libraries1

Literature1

Presence1

Morocco1

High2

Products1

Methods1

Member2

Paints1

Results2

Method1

Systems2

Index1