Addition Reaction

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addition reaction

[ə′di·shən rē′ak·shən]
(organic chemistry)
A type of reaction of unsaturated hydrocarbons with hydrogen, halogens, halogen acids, and other reagents, so that no change in valency is observed and the organic compound forms a more complex one.

Addition Reaction


one of the main types of chemical reaction in which a single new substance is formed from two or more individual substances, for example, NH3 + HCl = NH4Cl. Addition reactions include many reactions involving the recombination of atoms and radicals (H + H = H2 and CH3 + C2H5 = C3H8), reactions involving the addition of halogens to unsaturated aromatic compounds (C6H6 + 3C12 = C6H6C16), reduction reactions (C2H4 + H2 = C2H6), and reactions for the formation of complex compounds. Addition reactions are often intermediate steps in complex chemical processes.

References in periodicals archive ?
Tomalia (3) was the first to utilize Michael addition reactions to synthesize HB polymers.
5-7) Commercial ASPE-based diamines are derived from the Michael addition reaction between aliphatic diamines and diethyl maleate (DEM).
This is followed by the conjugate addition reaction of this nucleophile (BTA9) with the electrophilic BMI to form BTA-[BMI.
Type I coagents are typically polar, multifunctional low molecular weight compounds which form very reactive radicals through addition reactions.
These are produced by either addition reaction of primary radicals to double bonds in NBR or hydrogen abstraction from methylene carbon atoms by primary radicals in HNBR.
Besides radical coupling, addition reactions that were mentioned as the addition of radicals on double bonds in elastomer can also combine different chains.
The Formation of Csp2-S and Csp2-Se Bonds by Substitution and Addition Reactions Catalyzed by Transition Metal Complexes.
Scorch time increases as unsaturation decreases (NBR < EPDM < CM), perhaps due to the relative efficiency of addition reactions generating crosslink density compared to abstraction, as the polymer plays less of a role in the cure mechanism with increased saturation.
Within Scientific Research, Nelson's topics have been: (1) mechanistic patterns in alkene addition reactions and (2) Single-Walled Carbon Nanotube (SWCNT) functionalization and analysis.
Nevertheless, the potential Michael addition reactions cannot be ruled out because each BTA molecule contains two >NH groups and one >[CH.
With the reactive bismaleimide groups (two terminal --C=C-- groups), BMI can polymerize with active hydrogen atom-containing species such as multi-amines via the Michael addition reaction mechanism [1-6].