Electrophilic aromatic directing groups
In an electrophilic aromatic substitution reaction, existing substituent groups on the aromatic ring influence the overall reaction rate or have a directing effect on positional isomer of the products that are formed. An electron donating group (EDG) or electron releasing group (ERG, Z in structural formulas) is an atom or functional group that donates some of its electron density into a conjugated π system via resonance (mesomerism) or inductive effects (or induction)—called +M or +I effects, respectively—thus making the π system more nucleophilic. As a result of these electronic effects, an aromatic ring to which such a group is attached is more likely to participate in electrophilic substitution reaction. EDGs are therefore often known as activating groups, though steric effects can int
1,3-Dipolar cycloadditionActivating groupAromatic sulfonationAzo couplingBenzenesulfonic acid1,2-dimethoxyethaanBüchner–Curtius–Schlotterbeck reactionClonixinCrum Brown's ruleCrum Brown-Gibson ruleCrum Brown–Gibson ruleDeactivating groupDeactivating groupsDiformylcresolDirected ortho metalationEi mechanismElectrophilic aromatic substitutionFriedel–Crafts reactionHexanitrobenzeneHomoaromaticityList of organic reactionsNitrationNitrilaseOxazolePolar effectRadical-nucleophilic aromatic substitutionRing-opening polymerizationScholl reactionSilver nanoparticleSimmons–Smith reactionStar-shaped polymerStille reactionThiazoleTransition metal pincer complexTrichloroacetonitrileTropinoneVilsmeier–Haack reaction
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Electrophilic aromatic directing groups
In an electrophilic aromatic substitution reaction, existing substituent groups on the aromatic ring influence the overall reaction rate or have a directing effect on positional isomer of the products that are formed. An electron donating group (EDG) or electron releasing group (ERG, Z in structural formulas) is an atom or functional group that donates some of its electron density into a conjugated π system via resonance (mesomerism) or inductive effects (or induction)—called +M or +I effects, respectively—thus making the π system more nucleophilic. As a result of these electronic effects, an aromatic ring to which such a group is attached is more likely to participate in electrophilic substitution reaction. EDGs are therefore often known as activating groups, though steric effects can int
has abstract
En química, especialmente en q ...... cilita reacciones posteriores.
@es
In an electrophilic aromatic s ...... shared with the aromatic ring.
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苯环的亲电取代定位效应(英語:Orientation eff ...... 亲电取代反应的发生;二、钝化苯环,不利于亲电取代反应的发生。
@zh
配向性(はいこうせい)とは、ベンゼン環上の親電子置換反応において、置換基が及ぼす反応位置選択性を言い表す化学用語である。
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En química, especialmente en q ...... cilita reacciones posteriores.
@es
In an electrophilic aromatic s ...... though steric effects can int
@en
苯环的亲电取代定位效应(英語:Orientation eff ...... 亲电取代反应的发生;二、钝化苯环,不利于亲电取代反应的发生。
@zh
配向性(はいこうせい)とは、ベンゼン環上の親電子置換反応において、置換基が及ぼす反応位置選択性を言い表す化学用語である。
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Electrophilic aromatic directing groups
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Grupo activante
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苯环的亲电取代定位效应
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配向性
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