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.
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Since strong covalent bonds (Si-F) are formed in nucleophilic substitution reaction between F- (from the thermal decomposition of LiP[F.sub.6]) and covalent bonds (Si-O) of nan-oppy/OMMT, nano-ppy/OMMT-coated separator can inhibit the disproportionation of [Mn.sup.3+] in Li[Ni.sub.1/3][Co.sub.1/3][Mn.sub.1/3][O.sub.2] materials and decrease the internal resistance of cell at high temperature.
Moreover, as the substitution reaction between DOPO-HB and aniline occurred, the disappearance of the peak at 3564 [cm.sup.-1] for C--OH in DOPO-HB and the appearance of the peak at 3377 [cm.sup.-1] for --NH-- in DOPO-PHM revealed the presence of the Ph--NH--groups in the final product.
This type of catalysis has wide range of applications, especially in nucleophilic substitution reactions and reactions involving deprotonation of weak organic acids [4].
This is an important intermediate which can be used in nucleophilic substitution reaction to produce many valuable products, e.g.
This does suggest that glycerol is favored in the precursor substitution reaction. When TPG and glycerol are added together at the outset (Cases 1 and 3), both ends of the glycerol molecule react with TIP despite the excess TPG in solution.
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.
Among these reactive groups, the chloromethyl one is especially useful, because it can be readily modified by a substitution reaction with various nucleophilic reactants.
The branched polystyrene is produced by a nucleophilic substitution reaction of active methylene groups with bonded electron-attracting groups.
The reaction in this type of structure involves an addition-elimination reaction or a 1-3 substitution reaction (ref.
The positive substitution energy means substitution reaction is not thermodynamically favored.