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In chemistry, the hydrogenation of carbon–nitrogen double bonds is the addition of the elements of dihydrogen (H 2) across a carbon–nitrogen double bond, forming amines or amine derivatives. [1] Although a variety of general methods have been developed for the enantioselective hydrogenation of ketones, [ 2 ] methods for the hydrogenation of ...
Cyclohexylamine is an organic compound, belonging to the aliphatic amine class. It is a colorless liquid, although, like many amines, samples are often colored due to contaminants. It is a colorless liquid, although, like many amines, samples are often colored due to contaminants.
The addition of hydrogen and an amino group (NR 2) using reagents other than the amine HNR 2 is known as a "formal hydroamination" reaction. Although the advantages of atom economy and/or ready available of the nitrogen source are diminished as a result, the greater thermodynamic driving force, as well as ability to tune the aminating reagent ...
Steps in the hydrogenation of a C=C double bond at a catalyst surface, for example Ni or Pt : (1) The reactants are adsorbed on the catalyst surface and H 2 dissociates. (2) An H atom bonds to one C atom. The other C atom is still attached to the surface. (3) A second C atom bonds to an H atom. The molecule leaves the surface.
2 R-C≡N + 4 H 2 → (R-CH 2) 2 NH + NH 3 3 R-C≡N + 6 H 2 → (R-CH 2) 3 N + 2 NH 3. Such reactions proceed via enamine intermediates. [8] The most important reaction condition for selective primary amine production is catalyst choice. [1] Other important factors include solvent choice, solution pH, steric effects, temperature, and the ...
The nucelophilic amine reacts at the carbon of the carbonyl group to form a hemiaminal species; reversible loss of one molecule of water from the hemiaminal species by alkylimino-de-oxo-bisubstitution to form the imine intermediate. [3] The equilibrium between aldehyde/ketone and imine is shifted toward imine formation by dehydration. [2]
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2-Aminoalcohols are an important class of organic compounds that are often generated by the reaction of amines with epoxides: C 2 H 4 O + R−NH 2 → RNHC 2 H 4 OH. Simple alkanolamines are used as solvents, synthetic intermediates, and high-boiling bases. [2] Hydrogenation or hydride reduction of amino acids gives the