Freidel Craft Alkylation Acylation

Q.

Why is ethanol a hydrocarbon?

Q.

The function of anhydrous ${\text{AlCl}}_3$ in the Friedel-Craft's reaction is to:

1. absorb water.

2. absorb HCl.

3. to produce electrophile.

4. to produce nucleophile.

Q.

Name the attacking reagent in Friedel crafts alkylation and acylation.

Q. Which of the following structures correspond to the product expected, when excess of $C_6{H}_6$ reacts with $C{H}_{2}C{l}_2$ in presence of anhydrous $AlC{l}_3$ ?

1. a
2. b
3. c
4. d

Q.

In what state does ${\mathrm{BeCl}}_2$ in vapour phase exists below $900$degree Celsius?

Q. Choose the best reaction sequence that could be used to perform the following transformation.

1. $\underset{AlC{l}_3}{\overset{H_{3}C-C{H}_{2}Cl}{\to }}\stackrel{C{l}^{-}}{\to }$
2. $\underset{FeC{l}_3}{\overset{C{l}_2}{\to }}\underset{AlC{l}_3}{\overset{H_{3}C-Cl}{\to }}$
3. $\underset{FeC{l}_3}{\overset{C{l}_2}{\to }}\underset{AlC{l}_3}{\overset{H_{3}C-\stackrel{O}{\stackrel{||}{C}}-Cl}{\to }}\underset{ii.KOH}{\overset{i.N_2{H}_4}{\to }}$
4. $\underset{AlC{l}_3}{\overset{H_{3}C-\stackrel{O}{\stackrel{||}{C}}-Cl}{\to }}\underset{ii.KOH}{\overset{i.N_2{H}_4}{\to }}\underset{FeC{l}_3}{\overset{C{l}_2}{\to }}$

Q.

Acylation process is preferred than direct alkylation because (by the Friedel-Craft's reaction)

1. In alkylation, a poisonous gas is evolved

2. In alkylation, large amount of heat is evolved

3. In alkylation, polyalkylated product is formed

4. Alkylation is very costly

Q. Which of the following structures correspond to the product expected, when excess of $C_6{H}_6$ reacts with $C{H}_{2}C{l}_2$ in presence of anhydrous $AlC{l}_3$ ?

1. a
2. b
3. c
4. d

Q. The end product $\left(C\right)$ is:

1. 
2. 
3. 
4. 

Q. Identify the carboxylic acid chloride that might be used in a Friedel-Crafts reaction to prepare the following acyl benzene.

1. 
2. 
3. 
4. None of the above

Q. Friedel-Crafts alkylation is expected to proceed through a carbocation intermediate. What would be the alkylation product when benzene reacts with cyclopropyl chloride in the presence of $AlC{l}_3$?

1. 
2. 
3. 
4. 

Q. The major product of the following reaction is:

1. 
2. 
3. 
4. 

Q.

Statement-1 : Friedel-crafts reaction between benzene and acetic anhydride in the presence of anhydrous $AlC{l}_3$ yields acetophenone and not poly substituted products.
Statement-2 : Acetophenone formed, poisons the catalyst preventing further reaction.

1. Both Statement-1 and Statement-2 are true and Statement-2 is the correct explanation of Statement-1.
   

2. Both Statement-1 and Statement-2 are true and Statement-2 is not the correct explanation of Statement-1.
   

3. Statement-1 is true but Statement-2 is false.
   
   

4. Statement-1 is false but Statement-2 is true.

Q.

Major product formed during the reaction between isobutyl bromide and benzene in presence of anhydrous $AlC{l}_3$ is :

1. isobutyl benzene

2. t- butyl benzene

3. n - butyl benzene

4. no reaction

Q. Which of the following will give acetophenone as the major product when treated with benzene and $AlC{l}_3$?

1. 
2. 
3. 
4. 

Q. Choose the best reaction sequence that could be used to perform the following transformation.

1. $\underset{AlC{l}_3}{\overset{H_{3}C-C{H}_{2}Cl}{\to }}\stackrel{C{l}^{-}}{\to }$
2. $\underset{FeC{l}_3}{\overset{C{l}_2}{\to }}\underset{AlC{l}_3}{\overset{H_{3}C-Cl}{\to }}$
3. $\underset{FeC{l}_3}{\overset{C{l}_2}{\to }}\underset{AlC{l}_3}{\overset{H_{3}C-\stackrel{O}{\stackrel{||}{C}}-Cl}{\to }}\underset{ii.KOH}{\overset{i.N_2{H}_4}{\to }}$
4. $\underset{AlC{l}_3}{\overset{H_{3}C-\stackrel{O}{\stackrel{||}{C}}-Cl}{\to }}\underset{ii.KOH}{\overset{i.N_2{H}_4}{\to }}\underset{FeC{l}_3}{\overset{C{l}_2}{\to }}$