conjugate elimination

In chemistry, an elimination reaction is a process where atoms or groups of atoms are removed from a molecule. This typically transforms saturated compounds (single carbon-carbon bonds) into unsaturated compounds (double or triple carbon-carbon bonds).1

Specific types of elimination reactions include:
* Dehydrohalogenation: Removal of a hydrogen atom and a halogen atom.1
* Dehalogenation: Removal of two halogen atoms.1
* Dehydration: Elimination of a water molecule.1
* Dehydrogenation: Removal of two hydrogen atoms.1

Elimination reactions can be classified as E1 or E2, based on their kinetics. E1 reactions depend on the concentration of the substance being transformed, while E2 reactions depend on the concentrations of both the substrate and the eliminating agent.1

Conjugate eliminations occur when double bonds are introduced between carbon atoms that bear the eliminated substituents, resulting in a conjugated system of alternating double and single bonds.23