Addition reactions

thumb| Steps in the hydrogenation of a C=C double bond at a catalyst surface, for example Ni or Pt : (1) The reactants are Adsorption|adsorbed on the catalyst surface and H2 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.

chemical reaction where two or more molecules combine to form a larger one (the adduct)

chemical reaction in which a substance combines with water

mechanism of nucleophillic addition

carboxylation chemical reaction

chemical reaction

formation of Salicyladehyde

A hydrohalogenation reaction is the electrophilic addition of hydrogen halides like hydrogen chloride or hydrogen bromide to alkenes to yield the corresponding haloalkanes.

organic reaction

chemical reaction of a ketone or aldehyde with an α-haloester in the presence of a base to form an α,β-epoxy ester

chemical reaction

chemical reaction

in gatterman reaction(a modification of sandmeyer reaction) the catalyst cu powder in the presence of halogen acid (Hcl or Hbr)

reaction between two aromatic aldehydes

organic chemistry reaction

addition reaction in organic chemistry involving free radicals

chemical reaction

formylation reaction used in organic chemistry

chemical reaction

chemical reaction in organic chemistry

In organic chemistry, ethoxylation is a chemical reaction in which ethylene oxide () adds to a substrate. It is the most widely practiced alkoxylation, which involves the addition of epoxides to substrates.

Alkene reaction addn of water

chemical reaction involving organic compounds

chemical reaction

reaction in organic chemistry

type of chemical reaction

organic chemical reaction

chemical conversion

chemical reaction

method for synthesizing longer monosaccharides

chemical reaction

Chemical reaction in organic chemistry

organic reaction

named after Dalziel Hammick, a chemical reaction

chemical reaction

chemical reaction

In organic chemistry, hydrocyanation is a process for conversion of alkenes to nitriles. The reaction involves the addition of hydrogen cyanide and requires a catalyst if the substrate alkene is unactivated. This conversion is conducted on an industrial scale for the production of precursors to nylon. Direct hydrocyanation is rare in the laboratory because hydrogen cyanide is extremely toxic, but transfer variants can allow other nitrilic compounds to serve as hydrogen cyanide synthons.

specific chemical reaction

reaction for cyclic α-substituted α,β-unsaturated ketones from enol lactones

chemical reaction

chemical reaction

Chemical reaction

chemical reaction

Hydrodealkylation is a chemical reaction that often involves reacting an aromatic hydrocarbon, such as toluene, in the presence of hydrogen gas to form a simpler aromatic hydrocarbon devoid of functional groups. An example is the conversion of 1,2,4-trimethylbenzene to xylene. This chemical process usually occurs at high temperature, at high pressure, or in the presence of a catalyst. These are predominantly transition metals, such as chromium or molybdenum.

chemical reaction

Chemical reaction

reaction in organic chemistry

Addition reaction used to form C–C bonds

In organic chemistry, transalkylation is a chemical reaction involving the transfer of an alkyl group from one organic compound to another. The reaction is used for the transfer of methyl and ethyl groups between benzene rings. This is of particular value in the petrochemical industry to manufacture p-xylene, styrene, and other aromatic compounds. Motivation for using transalkylation reactions is based on a difference in production and demand for benzene, toluene, and xylenes. Transalkylation can convert toluene, which is overproduced, into benzene and xylene, which are under-produced. Zeolite

chemical reaction