• aliphatic amines
  • Small aliphatic amines display significant solubility in many solvents, whereas those with large substituents are lipophilic. (wikipedia.org)
  • Aliphatic nitro compounds can be reduced to aliphatic amines by several reagents: Catalytic hydrogenation using platinum(IV) oxide (PtO2) or Raney nickel Iron metal in refluxing acetic acid Samarium diiodide α,β-Unsaturated nitro compounds can be reduced to saturated amines by: Catalytic hydrogenation over palladium-on-carbon Iron metal Lithium aluminium hydride (Note: Hydroxylamines and oximes are typical impurities. (wikipedia.org)
  • azides
  • Trifluoromethanesulfonyl azide generally converts amines to azides. (wikipedia.org)
  • They react with amines to give the corresponding azides: RNH2 → RN3 A classic method for the synthesis of azides is the Dutt-Wormall reaction in which a diazonium salt reacts with a sulfonamide first to a diazoaminosulfinate and then on hydrolysis the azide and a sulfinic acid. (wikipedia.org)
  • Azides may be reduced to amines by hydrogenolysis or with a phosphine (e.g., triphenylphosphine) in the Staudinger reaction. (wikipedia.org)
  • hydroxylamines
  • Amine oxides are weak bases with a pKa of around 4.5 that form R3N+−OH, cationic hydroxylamines, upon protonation at a pH below their pKa. (wikipedia.org)
  • In the Meisenheimer rearrangement (after Jakob Meisenheimer) certain N-oxides R1R2R3N+O− rearrange to hydroxylamines R2R3N−O−R1 in a 1,2-rearrangement: or a 2,3-rearrangment: In the Polonovski reaction a tertiary N-oxide is cleaved by acetic acid anhydride to the corresponding acetamide and aldehyde: Amine oxides are common metabolites of medication and psychoactive drugs. (wikipedia.org)
  • increases
  • Viscosities of dilute solutions of n -propylamine, n -butylamine, di- n -propylamine, di- n -butylamine, tri- n -propylamine and tri- n -butylamine in toluene, and of tri- n -butylamine in benzene, have been measured at 303.15 K. The values of viscosity deviations are negative for all the amine solutions and their magnitude increases with the increase in concentration of alkylamine. (niscair.res.in)
  • The presence of an amine group strongly increases the reactivity of the aromatic ring, due to an electron-donating effect. (wikipedia.org)
  • regions
  • A detailed segmentation is done for amines for key regions that include Asia-Pacific, North America, Europe, and RoW and further for key countries in each region. (marketsandmarkets.com)
  • organic
  • Alkyl Amines Chemicals Limited operates within the Industrial organic chemicals sector. (corporateinformation.com)
  • In organic chemistry, amines (US: /əˈmiːn, ˈæmin/, UK: /əˈmiːn, ˈæmin, ˈeɪmin/) are compounds and functional groups that contain a basic nitrogen atom with a lone pair. (wikipedia.org)
  • A typical reaction involves triphenylphosphine with bromine to give bromotriphenylphosphonium bromide: Ph3P + Br2 → Ph3PBr+Br− This salt is treated in situ with alkylamines to give the iminophosphorane: Ph3PBr+Br− + 3 RNH2 → Ph3PNR + 2 RNH3+Br− The method is used when the conventional Staudinger reaction is not applicable, i.e. when the organic azide is not available to generate the iminophosphorane. (wikipedia.org)
  • hydrogen
  • The lone electron pair is represented in this article by a two dots above or next to the N. The water solubility of simple amines is enhanced by hydrogen bonding involving these lone electron pairs. (wikipedia.org)
  • halogen
  • Common approaches from these precursors include: Reaction of safrole's alkene functional group with a halogen containing mineral acid followed by amine alkylation. (wikipedia.org)
  • significantly
  • The use of alcohols (e.g. ethanol), aldehydes, ketones and nitriles as starting materials for the preparation of alkylamines is significantly less economical based on their prices than the use of corresponding olefins (e.g. ethene). (allindianpatents.com)
  • primary
  • The primary sources experts from related industries and suppliers have been interviewed to obtain and verify critical information as well as to assess the future prospects of amines. (marketsandmarkets.com)
  • give
  • o) Alkali metal monoalkylamides or alkali metal dialkylamides can be used as strong bases for the addition of olefins, such as ethylene, to amines with sufficient space-time yields, although in the presence of NH3 immediate protolysis of the corresponding alkali metal alkylamide to give MNH2 (M = alkali metal) occurs. (allindianpatents.com)
  • Type
  • Because of the low barrier to inversion, amines of the type NHRR′ cannot be obtained in optical purity. (wikipedia.org)
  • However
  • However, the alkali metal alkylamide-catalyzed addition of amines to olefins in the absence of NH3 again has the disadvantage that relatively expensive amines have to be used as starting materials instead of low-cost NH3. (allindianpatents.com)
  • Materials
  • Alkylamines are starting materials for the preparation of surfactants, textile and flotation auxiliaries, bactericides, corrosion and foam inhibitors, additives for pharmaceuticals, and as antioxidants for fats and oils. (allindianpatents.com)