Electrophilic Aromatic Substitution Electrophilic Aromatic Substitution involves the attack on the electrophile by the electrons of the aromatic ring and ...
Title: Substitution aromatique lectrophile Author: Ed Blackburn Last modified by: eblackbu Created Date: 3/30/1996 4:18:52 PM Document presentation format
Electrophilic Aromatic Substitution Electrophilic Aromatic Substitution involves the attack on the electrophile by the electrons of the aromatic ring and ...
New Way Chemistry for Hong Kong A-Level Book 3A. New Way Chemistry for Hong Kong ... Trigonal planar geometry. Bond angle = 120o. The C=C double bond in ethene ...
16. Chemistry of Benzene: Electrophilic Aromatic Substitution Substitution Reactions of Benzene and Its Derivatives Benzene is aromatic: a cyclic conjugated compound ...
29.2 Nomenclature of the Derivatives of Benzene. 29.3 Structure of Benzene and ... Benzo(a)pyrene (C20H12) New Way Chemistry for Hong Kong A-Level Book 3A. 45 ...
In an electrophilic aromatic substitution reaction, a hydrogen atom is replaced ... The nitronium ion (NO2 ) is the reactive electrophile in this reaction ...
... Directing effects of substituents already on the ring. Products of Nitration ... Substituents that make the ring react faster (than benzene) with electrophiles ...
These reactions are of the general type shown below; E -Electrophilic reagent ???? ... Fluorine (F2) reacts so rapidly with benzene that aromatic fluorination requires ...
... G may stabilize the carbocation intermediate and therefore speed the reaction, or it may raise the energy of the carbocation and slow the reaction.
16. Chemistry of Benzene: Electrophilic Aromatic Substitution Part 1 Based on McMurry s Organic Chemistry, 6th edition, Chapter 16 Substitution Rxns of Benzene ...
16. Chemistry of Benzene: Electrophilic Aromatic Substitution Based on McMurry s Organic Chemistry, 7th edition * 16.9 Oxidation of Aromatic Compounds Alkyl side ...
Electrophilic Addition to Alkenes. Electrophile - chemical species that is electron deficient ' ... is one of the best electrophiles - just a proton. This is ...
Electrophilic Addition of Hydrogen Halides to Alkenes Electrophilic addition of hydrogen halides to alkenes proceeds by rate-determining formation of a carbocation ...
Title: Carey Chapter 12 Aromatic Sub. Author: Monte Wolf Last modified by: mwolf Created Date: 8/14/2000 8:05:35 PM Document presentation format: On-screen Show (4:3)
How to solve this problem? Make Br2 more electrophilic. Aromatic. Not aromatic. FeBr3 ... Other Electrophiles: Friedel-Crafts Acylation. Write out the complete ...
Substitution Reactions of Benzene and Its Derivatives: Electrophilic Addition/Elimination Reactions. Benzene is aromatic: a cyclic conjugated compound with 6 electrons
Electrophilic substitution in pyrrole, furan and thiophene X = O, NH, or S Examples: Furan is able to act as a diene in the reactions of cycloaddition The Fisher ...
1. Nomenclature and physical ... Conjugation between p-orbitals is depicted by resonance structures ... Conjugation, involving s-orbitals, is depicted by ...
The electrophile can either add first to the metal center, or directly to the ligand. ... Depending on the electrophile, addition to a Cp ring of ferrocene can either ...
Y. H. Y. d d. 12.1. Representative Electrophilic Aromatic Substitution ... Rearrangements in Friedel-Crafts Alkylation. Carbocations are intermediates. ...
More stable since the double bond. bears more substituents. Less ... Diene dienophile adduct. 7. Diene dienophile adduct. Either diene or dienophile must have ...
Reactions of benzene lead to the retention of the aromatic core ... Benzene with acetyl chloride yields acetophenone. Mechanism of Friedel-Crafts Acylation ...
Presentation illustrating electron flow during electrophilic addition. First a sequence of s animates the process and can be controlled manually, then an ...
Substituents that withdraw electrons from the benzene ring will destabilize the ... a pale yellow solid, melts at 83 C, and explodes at 240 C. Supplying TNT with ...
Electrophilic Aromatic Substitution. A substituent already ... electrophile to positions ortho and/or. para to themselves. Meta directors direct an incoming ...
16. Chemistry of Benzene: Electrophilic Aromatic Substitution Part 2 Based on McMurry s Organic Chemistry, 6th edition, Chapter 16 * Reaction of Disubstituted ...
Chapter 3. Reactions of Alkenes 3.1. Electrophilic Addition reactions on carbon-carbon double bonds General reaction pattern: Incorporation of an electrophile by the C=C.
Problems with the Friedel-Crafts Alkylation Reaction ( ref. Sections 12.6 & 12.8) H ... RCCl. O. Zn(Hg), HCl. CH2R. Acylate the ring , then reduce the carbonyl ...
... are meta directing and strongly deactivating. Many EWGs Have a Carbonyl Group ... the net effect is that halogens are deactivating but ortho-para directing ...
... Aziridinating Agents. Katherine L. Hervert, Department of Chemistry, Ohio Wesleyan University. The facile alkene oxidation to an epoxide is an excellent ...
Click a box below to go to the mechanism Click here for advice Homolytic Free Radical Substitution Free Radical Addition Heterolytic Electrophilic Addition
Aromatic ring is ACTIVATED and undergoes electrophilic ... Ring Nomenclature: G. G. ?. H. G. ?. H. G. ?. H. G. ?. H. G. ?. H. G. ?. H. G. ?. H. G. ? ...
The nitrogen withdraws electrons by resonance, resulting in an electron-deficient ring system. * Pyridine undergoes electrophilic aromatic substitution at C-3: ...
Electrophilic Addition Reactions ... Electrophile a reactant attracted to the region of high electron density ... Predominant reaction electrophilic substitution ...
Substituent Effects on Electrophilic Aromatic Substitution meta-Directing Substituents ortho-para-Directing Groups ... that the nitro substituent is a meta director.
Reactions of Aromatic Compounds Electrophilic Aromatic Substitution Electrophile substitutes for a hydrogen on the benzene ring. Mechanism Bromination of Benzene ...
Benzene Part 1 ELECTROPHILIC SUBSTITUTION Theory The high electron density of the ring makes it open to attack by electrophiles Addition to the ring would upset ...
CH 16: Chemistry of Benzene Renee Y. Becker CHM 2211 Valencia Community College * Nucleophilic Aromatic Substitution * No Mechanism Electrophilic and Nucleophilic ...
Carbonyl carbons are electrophilic sites and can be attacked ... Friedel-Craft Acylation (12.7) - aryl ketones. 5. Hydroformylation of alkenes (please read) ...
Rates of Reaction Rates of electrophilic aromatic substitutions reactions increase with electron donating groups (EDG) on the ring. Rates decrease when electron ...
Chemistry 283g- Experiment 5 Electrophilic Aromatic Substitution: A Friedel-Craft Acylation Reaction IR Spectral Data of the Unknowns A-D Mass Spectral Data of the ...
Click a box below to go to the mechanism Click here for advice AS Free Radical Substitution Electrophilic Addition Nucleophilic Substitution (nitrile hydrolysis reaction)