nucleophile

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nucleophile

 [noo´kle-o-fīl″]
an electron donor in chemical reactions involving covalent catalysis in which the donated electrons bond other chemical groups (electrophiles). adj., adj nucleophil´ic.

nu·cle·o·phil

, nucleophile (nū'klē-ō-fil', -fīl),
1. The electron pair donor atom in a chemical reaction in which a pair of electrons is picked up by an electrophil; any reagent or substance that is attracted to a region of low electron density.
2. Relating to a nucleophil. Synonym(s): nucleophilic (1)
[nucleo- + G. philos, fond]

nucleophile

/nu·cleo·phile/ (noo´kle-o-fīl) an electron donor in chemical reactions involving covalent catalysis in which the donated electrons bond other chemical groups (electrophiles).nucleophil´ic

nu·cle·o·phil

, nucleophile (nū'klē-ō-fil, -fīl)
1. The electron pair donor atom in a chemical reaction in which a pair of electrons is picked up by an electrophil.
2. Relating to a nucleophil.
Synonym(s): nucleophilic (1) .
[nucleo- + G. philos, fond]

nucleophile

an electron donor in chemical reactions involving covalent catalysis in which the donated electrons bond other chemical groups (electrophiles).
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References in periodicals archive ?
The secondary amine addition product was not observed, indicating the secondary amine nucleophilicity is substantially reduced.
Nucleophilicity of the polymerizing media is very important, as more nucleophilic solvent will react with free radical intermediates of the polymers and result in passive polymer films, whereas EMIPFSI is extremely hydrophobic, so it will facilitate the formation of ordered polymer with high doping level.
DMAP was added as Lewis base to enhance the nucleophilicity of the hydroxyl groups of the dextran polymers to form 3-methacryloyl-l-glyceryl ether of dextran (27).
Without study of the kinetics of polymerization, it is difficult to speak about the rate and rate constants of a reaction, nevertheless, it is reasonable to suppose that the nucleophilicity of phenol is the dominating force of this reaction.
These values provide qualitative confirmation of the strong dependency of the rate of PEN alcoholysis on the nucleophilicity of the alcohol, those for aliphatic alcohols being an order of magnitude higher than those for phenols.
In order to reduce the nucleophilicity of living ends before the addition of [epsilon]-caprolactone ([epsilon]-CL), 1,1-diphenylethylene (DPE) was used as an end-capping agent.
In this system, the initiator activity of N-benzylpyrazinium salts can be enhanced by decreasing the nucleophilicity of the counterion, [SbF.