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Question 10 Why does nitrobenzene fail to undergo Friedel-Crafts alkylation with tert-butyl chloride and AICI! a....
When performing a Friedel-Crafts alkylation reaction, not only does one have the problems of multiple alkylation...
When performing a Friedel-Crafts alkylation reaction, not only does one have the problems of multiple alkylation and rearrangement of the cation, but the presence of strong electron donating groups(yes, donating is correct) prevents reaction. Provide an explanation for this. Metallocenes, like ferrocene cannot be nitrated. Why? Draw the structure of the diacetylferrocene you would obtain if ferrocene were diacetylated. Draw an arrow pushing mechanism for the formation of the acylium ion when acetic anhydride reacts with phosphoric acid. Provide the...
These question are for the Friedel Crafts Alkylation of 1,4-Dimethoxybenzene organic chem lab 1. Why is...
These question are for the Friedel Crafts Alkylation of
1,4-Dimethoxybenzene organic chem lab
1. Why is 1,4-di-t-butyl-2,5-dimethoxybenzene the preferred product of this reaction? Why is neither 1,2-di-t-butyl-3,6-dimethoxybenzene nor 1,3-di-t-butyl-3,6-dimethoxybenzene formed as side products? OCH3 OCH3 OCH3 OCH3 1,2-di-t-butyl-3,6-dimethoxybenzene 1,3-di-t-butyl-3,6-dimethoxybenzene 2. 3. 4. Why was the product washed with water? Why was the product washed with methanol? We used t-butyl alcohol to generate t-butyl cation. Suggest two other compounds that could be used to generate the t-butyl cation.
Explain why alkylation increases the nucleophilicity of the ring when we synthesize 1 ,4-di-tert-butyl-2 5-dimethoxybenzene OCH...
Explain why alkylation increases the nucleophilicity of the ring
when we synthesize 1 ,4-di-tert-butyl-2
5-dimethoxybenzene
OCH ОСНз C(CH3)3 2(CH,),COH 50 CH3 OCH In this reaction, the electrophile is a carbocation, generated by treating a tertiary alcohol ((CH3),C-OH) with á Strong acid CHoSO) as the dehydrating agent The advantage of this method for generating the electrophile is that the tertiary butyl cation is a stable carbocation and does not rearrange CH3 CH H3 After the electrophilic cation has been formed, it...
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,...
QUESTIONS 1. What is the purpose of the sulfuric acid (yes, it's a catalyst, but why...
QUESTIONS 1. What is the purpose of the sulfuric acid (yes, it's a catalyst, but why is it a catalyst? What is it doing that makes the reaction possible? Would the reaction just go slower without it, or would the reaction not go at all? Why?) 2. If isobutyl alcohol (2 methyl propanol) is used instead of tert butyl alcohol, a mixture of products is obtained. One the products is the same as the product obtained with the tert butyl...
Questions 2-10 please!! 1) A substitution reaction is: [2] a) A reaction during which an OH...
Questions 2-10 please!!
1) A substitution reaction is: [2] a) A reaction during which an OH group of a molecule is replaced by a halogen. b) A reaction during which water is the leaving group. c) A reaction during which a functional group of a molecule is replaced by an electrophile. d) A reaction during which a functional group of a molecule is replaced by another functional group. V 12 2) Substitution reactions are classified either as electrophilic or nucleophilic...
U. Soo-school-bet.cn E. 4-bromo-1-chloro-2-nitrobenzene 10 Identify the aromatic compounds AI and II B. II and 111...
U. Soo-school-bet.cn E. 4-bromo-1-chloro-2-nitrobenzene 10 Identify the aromatic compounds AI and II B. II and 111 D. I. II and II E none of the above C. I and III 11. What is the value of a from Hucke's rule for the following aromatic compound? D. ES G3 12 The Birch reduction of benzene with sodium in NH.CH.Oh goes by a four-step mechanism The first step is the A. transfer of a proton from NH, to benzeme B. transfer of...
When performing a Friedel-Crafts alkylation reaction, not only does one have the problems of multiple alkylation and rearrangement of the cation, but the presence of strong electron donating groups(yes, donating is correct) prevents reaction. Provide an explanation for this. Metallocenes, like ferrocene cannot be nitrated. Why? Draw the structure of the diacetylferrocene you would obtain if ferrocene were diacetylated. Draw an arrow pushing mechanism for the formation of the acylium ion when acetic anhydride reacts with phosphoric acid. Provide the...
These question are for the Friedel Crafts Alkylation of
1,4-Dimethoxybenzene organic chem lab
1. Why is 1,4-di-t-butyl-2,5-dimethoxybenzene the preferred product of this reaction? Why is neither 1,2-di-t-butyl-3,6-dimethoxybenzene nor 1,3-di-t-butyl-3,6-dimethoxybenzene formed as side products? OCH3 OCH3 OCH3 OCH3 1,2-di-t-butyl-3,6-dimethoxybenzene 1,3-di-t-butyl-3,6-dimethoxybenzene 2. 3. 4. Why was the product washed with water? Why was the product washed with methanol? We used t-butyl alcohol to generate t-butyl cation. Suggest two other compounds that could be used to generate the t-butyl cation.
Explain why alkylation increases the nucleophilicity of the ring
when we synthesize 1 ,4-di-tert-butyl-2
5-dimethoxybenzene
OCH ОСНз C(CH3)3 2(CH,),COH 50 CH3 OCH In this reaction, the electrophile is a carbocation, generated by treating a tertiary alcohol ((CH3),C-OH) with á Strong acid CHoSO) as the dehydrating agent The advantage of this method for generating the electrophile is that the tertiary butyl cation is a stable carbocation and does not rearrange CH3 CH H3 After the electrophilic cation has been formed, it...
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,...
QUESTIONS 1. What is the purpose of the sulfuric acid (yes, it's a catalyst, but why is it a catalyst? What is it doing that makes the reaction possible? Would the reaction just go slower without it, or would the reaction not go at all? Why?) 2. If isobutyl alcohol (2 methyl propanol) is used instead of tert butyl alcohol, a mixture of products is obtained. One the products is the same as the product obtained with the tert butyl...
Questions 2-10 please!!
1) A substitution reaction is: [2] a) A reaction during which an OH group of a molecule is replaced by a halogen. b) A reaction during which water is the leaving group. c) A reaction during which a functional group of a molecule is replaced by an electrophile. d) A reaction during which a functional group of a molecule is replaced by another functional group. V 12 2) Substitution reactions are classified either as electrophilic or nucleophilic...
U. Soo-school-bet.cn E. 4-bromo-1-chloro-2-nitrobenzene 10 Identify the aromatic compounds AI and II B. II and 111 D. I. II and II E none of the above C. I and III 11. What is the value of a from Hucke's rule for the following aromatic compound? D. ES G3 12 The Birch reduction of benzene with sodium in NH.CH.Oh goes by a four-step mechanism The first step is the A. transfer of a proton from NH, to benzeme B. transfer of...
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