Q-8
one of the hydrogen of the aromatic ring is substituted by E+ (electrophilr)
so the mechanism is aromatic electrophilic substitution reaction
option 1 is the correct answer
Q-9
highly electron deactivated aromatic rings will not under go friedal crafts reaction
-NO2 group is that highly electron with drawing group
second option is correct answer
Q-10
again same state ment
which aromatic ring is having least electron density that will have least reactivity to wards aromatic electrophilic substitution reaction
in the third option C=O group is the -M effect (-Mesomeric effect)
option 3 is the correct answer
All three please! Which mechanism is represented below? which of the following will NOt undergo Friedel-crafts...
3. Rank the reactivity of the compounds shown below when using a Friedel Crafts alkylation reaction. Make sure you label which is least reactive and most reactive. (5 pts) 4. Provide a plausible mechanism for the reaction shown.(6 pts) =100
produce the mechanism for the friedel-crafts acylation
reaction. please box the answers for these three questions.
AICI3 AICI: AICI: 2 ?
Friedel-Crafts Acylation of Ferrocene "riedel-Crafts reactions are examples of electrophilic aromatic substitution reactions. The eaction involves the substitution of hydrogen on the aromatic ring system by an electrophilic arbon species forming a new carbon-carbon bond. Friedel-Crafts reactions may be used to ntroduce either an alkyl or acyl group. Ferrocene does not undergo addition reactions typical of cyclopentadiene, but undergoes Electrophilic aromatic substitution. The Friedel-Crafts acylation reaction of ferrocene involves he addition of the acylium cation to one of the carbon...
3. Rank the reactivity of the compounds shown below when using a Friedel Crafts alkylation reaction. Make sure you label which is least reactive and most reactive. (5pts)
Rank the reactivity of the compounds shown below when using a Friedel Crafts alkylation reaction. Make sure you label which is least reactive and most reactive. (5 pts)
10. What is a major problem with Friedel-Crafts alkylation? A) It requires high temperatures. B) The conditions are too acidic. C) The starting material is frequently over-alkylated. D) The products coordinate with the aluminum chloride. 11. Which of the following statements about the mechanism of electrophilic aromatic substitution is not true? A) All electrophilic aromatic substitution reactions occur via a two-step mechanism. B) The transition state of the first step is lower in energy. C) The first step is the...
Draw the major organic product of the following Friedel–Crafts
alkylation. (An excess of benzene is present.)
aw the major organic product of the following Friedel-Crafts alkylation. (An excess of benzene is present.) AICI, Previous ⓧ Give Up & View Solution # Try Again Next Exit Explanation This reaction is an electrophilic aromatic substitution. The aluminum chloride polarizes the chlorine-carbon bond of the alkyl halide, imparting carbocation character (i.e., electrophilicity) to the alkyl group Since an excess of benzene is present,...
Draw the product and mechanism of the following Friedel-Crafts
reaction.
4. Draw the product for the following reaction. Hint: Draw the mechanism for the electrophile formation first. AICI: Followed by workup
Complete the mechanism for the generation of the electrophile
used for Friedel-Crafts acylation with the following acyl halide.
Add curved arrows, bonds, electron pairs, and charges where
indicated.
Part 2 MATCH a structure or term from the following list with each description below. Place the letter of the structure or term in the blank to the left of the description. a. benzyne e. "NO b. +NO2 f. Meisenheimer complex c. R₃Ct g. acylium cation d. electron-donating h. electron-withdrawing i. F-TEDA-BF4 ini The reactive electrophile in Friedel-Crafts acylation reactions. The electrophile in aromatic nitration. 3. Groups which activate aromatic rings towards electrophilic substitution. 4. Groups which activate aromatic rings...