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Amine. In chemistry, amines (/ ə ˈ m iː n, ˈ æ m iː n /, [1] [2] UK also / ˈ eɪ m iː n / [3]) are compounds and functional groups that contain a basic nitrogen atom with a lone pair.Formally, amines are derivatives of ammonia (NH 3), wherein one or more hydrogen atoms have been replaced by a substituent such as an alkyl or aryl group [4] (these may respectively be called alkylamines ...
Aliphatic compounds can be saturated, joined by single bonds , or unsaturated, with double bonds or triple bonds . If other elements ( heteroatoms ) are bound to the carbon chain , the most common being oxygen , nitrogen , sulfur , and chlorine , it is no longer a hydrocarbon, and therefore no longer an aliphatic compound.
With secondary amines and not primary amines the Zincke reaction takes on a different shape forming so-called Zincke aldehydes in which the pyridine ring is ring-opened with the terminal iminium group hydrolyzed to an aldehyde: [4] Zincke aldehydes. This variation has been applied in the synthesis of novel indoles: [11] Zincke aldehydes Kearney ...
Tertiary aliphatic nitro compounds, however, are converted in good yield to the amine using the Béchamp reduction. [6] The reduction proceeds in a multistep manner. First, the nitro group is reduced to nitroso, which undergoes hydrogenation to a hydroxylamino group prior to further reduction to the amine. [7] Proposed mechanism of the Bechamp ...
When reduced by sodium in boiling amyl alcohol solution, it forms tetrahydro-3-naphthylamine, which exhibits the properties of the aliphatic amines in that it is strongly alkaline in reaction, has an ammoniacal odor and cannot be diazotized. On oxidation, it yields ortho-carboxy-hydrocinnamic acid, HO 2 CC 6 H 4 CH 2 CH 2 CO 2 H.
As it is an aromatic amine, its rate of cure is much slower than aliphatic amines and thus used with epoxy resin systems to lengthen the working time or potlife. [16] These are then used in adhesives, sealants, and paints or coatings. [17] It is often used with epoxy resins for its excellent mechanical properties. [18]
Aliphatic amine; Psychotropic alkylamines This page was last edited on 27 December 2020, at 15:36 (UTC). Text is available under the Creative Commons ...