Enamines

thumb|150px|The general structure of an enamine An enamine is a functional group with the formula . Enamines are reagents used in organic synthesis and are intermediates in some enzyme-catalyzed reactions.

chemical reaction

In organic chemistry, tetraaminoethylene is a hypothetical, organic compound with formula or . Like all polyamines that are geminal, this compound has never been synthesised and is believed to be extremely unstable.

Tetrakis(dimethylamino)ethylene (TDAE) is an organic compound with the formula , It is a colorless liquid. It is classified as an enamine. Primary and secondary enamines tend to isomerize, but tertiary enamines are kinetically stable. One unusual feature of TDAE is that it is a tetra-enamine. The pi-donating tendency of the amine groups strongly enhances the basicity of the molecule, which does exhibit properties of a typical alkene.

Diaminomaleonitrile (DAMN) is an organic compound composed of two amino groups and two nitrile groups bonded to a central alkene unit. The systematic name reflects its relationship to maleic acid. DAMN forms by oligomerization of hydrogen cyanide. It is the starting point for the synthesis of several classes of heterocyclic compounds. It has been considered as a possible organic chemical present in prebiotic conditions.

Kopexil (INCI name diaminopyrimidine oxide, trade name Aminexil) is a chemical compound similar to minoxidil. Minoxidil was originally used to treat high blood pressure; a side effect was increased body hair. Both compounds have been used for therapy of alopecia. Kopexil is not approved for use as a drug in the United States or in Europe.