What is the first step in the friedel crafts alkylation? A.Form a carbon cation on the...
What is the first step in the friedel crafts alkylation?
A.Form a carbon cation on the carbon
B.Remove a hydrogen freon the benzene
C.Connect the alkyl chlorine to ferric chloride
D. Electrons from the oxygen attack the benzene ring
Homework Answers
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What is the first step in the friedel crafts
alkylation?
A.Form a carbon cation on the...
Draw the major organic product of the following Friedel–Crafts alkylation. (An excess of benzene is present.)...
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,...
Organic Chemistry: Which of the following is NOT a correct statement concerning the Friedel-Crafts alkylation of...
Organic Chemistry: Which of the following is NOT a correct statement concerning the Friedel-Crafts alkylation of benzene? a) The alkyl ion is often produced from an alkyl chloride. b) The reaction is a convenient way to prepare n-alkyl-substituted benzene. c) The benzene ring nucleophilically attacks an alkyl ion. d) Isomerization of alkyl group of the electrophile may often happen. e) An alkyl group substitutes for a hydrogen. f) Only catalytic amount of Lewis acid must be used.
Why is the Friedel-Crafts acylation preferred over Friedel-Crafts alkylation for monoalkylation of a benzene ring even...
Why is the Friedel-Crafts acylation preferred over Friedel-Crafts alkylation for monoalkylation of a benzene ring even though extra steps are required?
Complete the mechanism for the generation of the electrophile used for Friedel-Crafts alkylation with the following...
Complete the mechanism for the generation of the electrophile
used for Friedel-Crafts alkylation with the following alkyl halide.
Add curved arrows, bonds, nonbonding electron pairs, and charges
where indicated.
There is a double bond in the 3rd step, but it wont let me create
an arrow from the Iron to the Cl. Can someone explain what I am
doing wrong in the second step? Thanks!
electron pairs, and ch
Complete the mechanism for the generation of the electrophile used for...
In the friedel-crafts acylation reaction the electrophile is which of the following? A. nitronium cation B....
In the friedel-crafts acylation reaction the electrophile is which of the following? A. nitronium cation B. acylium cation C. sulfonium cation D. alkyl action which reagent sequence can be used to prepare m-chloronitrobenzene? A. Benzene, Cl_2/FeCl_3, HNO_3/H_2SO_4 B. Benzene, HNO_3/H_2SO_4, Cl_2/FeCl_3 C. Benzene, AlCl_3 iHNO_a/H_2SO_4 D. Benzene, HNO_3; Cl_2/FeCl_3
Question 10 Why does nitrobenzene fail to undergo Friedel-Crafts alkylation with tert-butyl chloride and AICI! a....
Question 10 Why does nitrobenzene fail to undergo Friedel-Crafts alkylation with tert-butyl chloride and AICI! a. nitrobenzene is a poor nucleophile b. the nitro group is a strong electron donating group C. nitrobenzene reacts with AlCl3 d. the tert-butyl cation is a poor electrophile ) This response
10. What is a major problem with Friedel-Crafts alkylation? A) It requires high temperatures. B) The...
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...
Friedel-Crafts Acylation of Ferrocene "riedel-Crafts reactions are examples of electrophilic aromatic substitution reactions. The eaction involves...
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...
The following questions are from an experiment titled Friedel-Crafts Alkylation for Organic Chemistry II Lab. There...
The following questions are from an experiment titled
Friedel-Crafts Alkylation for Organic Chemistry II Lab. There are
pictures attached of the lab manual.
2) Is this method a good route for the preparation of
p-sec-butyltoulene? Give reasons for your answer.
3) Why do you use a large excess of toulene. What are its
functions?
4) What is the purpose for adding the hydrochloric acid to the
water in the separatory funnel in step 5? Hint: If no acid is
added,...
3. Which of the following is/are false regarding Friedel-Crafts alkylation? H2 gas is a by-product Alkyl...
3. Which of the following is/are false regarding Friedel-Crafts alkylation? H2 gas is a by-product Alkyl halide can rearrange rapidly following heterolysis AlCl3 is the electron-deficient species when generating the reactive electrophile A. I only B. i and i C. li only Frank D. i, ii, and iii are false.
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,...
Complete the mechanism for the generation of the electrophile
used for Friedel-Crafts alkylation with the following alkyl halide.
Add curved arrows, bonds, nonbonding electron pairs, and charges
where indicated.
There is a double bond in the 3rd step, but it wont let me create
an arrow from the Iron to the Cl. Can someone explain what I am
doing wrong in the second step? Thanks!
electron pairs, and ch
Complete the mechanism for the generation of the electrophile used for...
In the friedel-crafts acylation reaction the electrophile is which of the following? A. nitronium cation B. acylium cation C. sulfonium cation D. alkyl action which reagent sequence can be used to prepare m-chloronitrobenzene? A. Benzene, Cl_2/FeCl_3, HNO_3/H_2SO_4 B. Benzene, HNO_3/H_2SO_4, Cl_2/FeCl_3 C. Benzene, AlCl_3 iHNO_a/H_2SO_4 D. Benzene, HNO_3; Cl_2/FeCl_3
Question 10 Why does nitrobenzene fail to undergo Friedel-Crafts alkylation with tert-butyl chloride and AICI! a. nitrobenzene is a poor nucleophile b. the nitro group is a strong electron donating group C. nitrobenzene reacts with AlCl3 d. the tert-butyl cation is a poor electrophile ) This response
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...
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...
The following questions are from an experiment titled
Friedel-Crafts Alkylation for Organic Chemistry II Lab. There are
pictures attached of the lab manual.
2) Is this method a good route for the preparation of
p-sec-butyltoulene? Give reasons for your answer.
3) Why do you use a large excess of toulene. What are its
functions?
4) What is the purpose for adding the hydrochloric acid to the
water in the separatory funnel in step 5? Hint: If no acid is
added,...
3. Which of the following is/are false regarding Friedel-Crafts alkylation? H2 gas is a by-product Alkyl halide can rearrange rapidly following heterolysis AlCl3 is the electron-deficient species when generating the reactive electrophile A. I only B. i and i C. li only Frank D. i, ii, and iii are false.
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