An addition reaction, in chemistry, is in its simplest terms an organic reaction where two or more molecules combine to form a larger one. Chemistry (from Egyptian kēme (chem meaning "earth") is the Science concerned with the composition structure and properties Organic reactions are Chemical reactions involving Organic compounds The basic Organic chemistry reaction types are Addition reactions Elimination

There are two main types of polar addition reactions:

• Electrophilic addition
• Nucleophilic addition

Other non-polar addition reactions exists as well:

• Free radical addition

Addition reactions are limited to chemical compounds that have multiply-bonded atoms:

• Molecules with carbon-carbon double bonds or triple bonds
• Molecules with carbon - hetero double bonds like C=O or C=N

An addition reaction is the opposite of an elimination reaction. In Organic chemistry, an electrophilic addition reaction is an Addition reaction where in a Chemical compound, a Pi bond is removed by the creation In Organic chemistry, a nucleophilic addition reaction is an Addition reaction where in a Chemical compound a π bond is removed by the creation Free radical addition is an Addition reaction in Organic chemistry involving Free radicals. In the nomenclature of Organic chemistry, a heteroatom (from Ancient Greek heteros, different + atomos) is any Atom that An elimination reaction is a type of Organic reaction in which two Substituents are removed from a molecule in either a one or two-step mechanism. For instance the hydration reaction of an alkene and the dehydration of an alcohol are addition-elimination pairs. In Organic chemistry, a hydration reaction is a Chemical reaction in which a Hydroxyl group (OH- and a Hydrogen Cation In Organic chemistry, an alkene, olefin, or olefine is an unsaturated Chemical compound containing at least one Carbon In Chemistry, an alcohol is any Organic compound in which a Hydroxyl group ( - O[[hydrogen H]]) is bound to a Carbon

Addition-elimination reaction

In the related Addition-elimination reaction an addition reaction is followed by an elimination reaction. An elimination reaction is a type of Organic reaction in which two Substituents are removed from a molecule in either a one or two-step mechanism. In the majority of reactions it involves addition of nucleophiles to carbonyl compounds in what is called nucleophilic acyl substitution ^[1]. Nucleophilic acyl substitution describes the Substitution reaction involving Nucleophiles and Acyl compounds

Other addition-elimination reactions are:

• reaction of an aliphatic amine to an imine and an aromatic amine to a Schiff base in alkylimino-de-oxo-bisubstitution
• Hydrolysis of nitriles to carboxylic acids

See also

• Addition reactions are applied in addition polymerization. Amines are Organic compounds and Functional groups that contain a basic Nitrogen Atom with a Lone pair. An imine is a Functional group or Chemical compound containing a Carbon – Nitrogen Double bond. Schiff base (or azomethine) named after Hugo Schiff, is a Functional group that contains a Carbon - Nitrogen Double bond Alkylimino-de-oxo-bisubstitution in Organic chemistry is the Organic reaction of Carbonyl compounds with Amines to Imines. A nitrile is any Organic compound which has a - C ≡ N Functional group. Carboxylic acids are Organic acids characterized by the presence of a Carboxyl group, which has the formula -C(=OOH usually written -COOH or -CO2H Addition polymerisation, also called polyaddition or chain growth polymerization, is a Polymerisation technique where unsaturated Monomer

References

The Journal of Chemical Education ( JCE) is a monthly subscription-only periodical available in both print and electronic versions

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