substitution reaction


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Related to substitution reaction: addition reaction, elimination reaction

substitution reaction

[‚səb·stə′tü·shən rē‚ak·shən]
(chemistry)
Replacement of an atom or radical by another one in a chemical compound.
References in periodicals archive ?
Moreover, as the substitution reaction between DOPO-HB and aniline occurred, the disappearance of the peak at 3564 [cm.
This type of catalysis has wide range of applications, especially in nucleophilic substitution reactions and reactions involving deprotonation of weak organic acids [4].
This enabled to achieve intensification of the nucleophilic substitution reaction with high volume productivity and critical control of process condition which in batch manner takes more than 3 hr.
This does suggest that glycerol is favored in the precursor substitution reaction.
The major difference is that 3 utilized a chiral side group that contained 12 stereogenic centers that underwent multiple substitution reactions as it was being prepared.
The zinc hydroxybromide then catalyzes an electrophilic aromatic substitution reaction forming `diphenylmethyl' crosslinks.
The Amberlite XAD-4[TM] (PS, from Rohm and Haas) beads were modified by the aromatic electrophilic substitution reaction of benzenic rings of the copolymer using PC[l.
Since quaternary ammonium salts are obtained by simple nucleophilic substitution reaction of an alkyl/aryl halide with a tertiary amine, variety of quaternary ammonium salts can be obtained by changing either of the two components.
A novel series of imine-diols (D-1, D-2, D-3, D-4, D-5,D-Ar) having inbuilt aliphatic and aromatic segments were prepared via two-step process involving nucleophilic substitution reaction between dibromoalkanes and 4-hydroxybenzaldehyde leading to the formation of dialdehydes and then its acid catalyzed reaction with 4-hydroxyaniline.
On the other hand, taking into account the performances of negative types of photopolymers, particularly in regard to the thermal stability and molecular mass of the basic polymer, the polyphosphazene backbone chain is considered to be preferable to organic backbones, In addition, the ability to incorporate a wide variety of co-substituents via a macromolecular substitution reaction can allow such properties as photosensitivity, crosslinking density, [T.
Amine, the nucleophile, attacks on sulfonyl chloride [7] while electrophilic substitution reaction takes place during N-substitution of these resulted molecules.
Sulfonation is defined as a substitution reaction used to attach the [approximately]S[O.