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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(NH 3 (in which the bond angle between the nitrogen and hydrogen is 170°), wherein one or more hydrogen atoms have been replaced by a substituent such as an ...
Ethylammonium nitrate or ethylamine nitrate [3] (EAN) is a salt with formula [CH 3 CH 2 NH 3] + [NO 3] −. It is an odorless and colorless to slightly yellowish liquid with a melting point of 12 °C. [4] This compound was described by Paul Walden in 1914, [5] [6] and is believed to be the earliest reported example of a room-temperature ionic ...
Enamines act as nucleophiles that require less acid/base activation for reactivity than their enolate counterparts. They have also been shown to offer a greater selectivity with less side reactions. There is a gradient of reactivity among different enamine types, with a greater reactivity offered by ketone enamines than their aldehyde ...
N,N-Diisopropylethylamine, or Hünig's base, is an organic compound that is a tertiary amine. It is named after the German chemist Siegfried Hünig . It is used in organic chemistry as a non-nucleophilic base. It is commonly abbreviated as DIPEA, DIEA, or i-Pr 2 NEt.
A biogenic amine is a biogenic substance with one or more amine groups. They are basic nitrogenous compounds formed mainly by decarboxylation of amino acids or by amination and transamination of aldehydes and ketones.
Triethylamine is commonly employed in organic synthesis as a base. For example, it is commonly used as a base during the preparation of esters and amides from acyl chlorides . [ 15 ] Such reactions lead to the production of hydrogen chloride which combines with triethylamine to form the salt triethylamine hydrochloride, commonly called ...
Diethylamine is obtained together with ethylamine and triethylamine. Annual production of the three ethylamines was estimated in 2000 to be 80,000,000 kg. [5] Diethylamine is used in the production of corrosion inhibitor N,N-diethylaminoethanol, by reaction with ethylene oxide. It is also a precursor to a wide variety of other commercial products.
In all these examples, stoichiometric base is needed to convert the amine hydrochloride to free amines. In the monoethanolamine route, monoethanolamine reacts with ammonia, catalyzed by transition metal catalysts. This process is reported to generate more cyclic compounds than the ethylene dichloride route. [2]