a) Complete the generic mechanism for an electrophilic aromatic substitution (EAS) reaction using El as the...
a) Complete the generic mechanism for an electrophilic aromatic substitution (EAS) reaction using El as the electrophile and show how the sigma complex is resonance stabilized. Use curved arrows to show the mechanism and the conversion between resonance structures. Make sure to add any missing charges. Note the use of a generic base in the last step. b) Label the reaction coordinate diagram for a typical EAS reaction shown below by correctly placing the letter for each structure on the diagram.
Homework Answers
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a) Complete the generic mechanism for an electrophilic aromatic
substitution (EAS) reaction using El as the...
Complete the mechanism for the electrophilic aromatic substitution of trifluorobenzene. Do not bother placing all of...
Complete the mechanism for the electrophilic aromatic substitution of trifluorobenzene. Do not bother placing all of the lone pairs of electrons on the F atoms, but be sure to place them on all other atoms as needed. Do not draw curved arrows between the resonance structures.
Aromatic heterocycles also undergo electrophilic aromatic substitution reactions. When furan is treated with an electrophile, the...
Aromatic heterocycles also undergo electrophilic aromatic
substitution reactions. When furan is treated with an electrophile,
the electrophile is installed only at the C-2 position. Explain why
this reaction occurs only at the C-2 position, rather than the C-3
positions.(explain in words and resonance structures)
Question 2 (10 pts). Aromatic heterocycles can undergo EAS reactions. When furan (below) is treated with an electrophile, an EAS reaction occurs in which the electrophile is installed only at carbon 2, not carbon 3. Explain...
+ H+ Electrophilic aromatic substitution is a two-step process. In the first step an electrophile, here...
+ H+ Electrophilic aromatic substitution is a two-step process. In the first step an electrophile, here generically shown as Y , reacts with the aromatic ring to form a resonance-stabilized carbocation intermediate. In the second step, loss of a proton from the site of attack restores aromaticity to the ring and completes the reaction. Draw curved arrows to show the movement of electrons in this step of the mechanism. Arrow-pushing Instructions no XT + H H- A
Provide the reaction for chlorination of benzene using electrophilic aromatic substitution, it's complete mechanism including formation...
Provide the reaction for chlorination of benzene using electrophilic aromatic substitution, it's complete mechanism including formation of "super" electrophile, and a completely labeled reaction coordinate energy diagram. 1.
250 ChemActivity 29 Electrophilic Aromatic Substitution no ChemActivity 29 Part A: Electrophilic Aromatic Substitution (What products...
250 ChemActivity 29 Electrophilic Aromatic Substitution no ChemActivity 29 Part A: Electrophilic Aromatic Substitution (What products are formed when a strong electrophile is added to benzene?) Model 1: (review) Electrophilic Addition of HCI Rani o g cyclohexene carbocation intermediate Run 2 U X benzene This product carbocation intermediate DOES NOT Critical Thinking Questions 1 For Rxn I (above) draw curved arrows showing the mechanism of electrophilic addition of HCl. Include an appropriate carbocation intermediate in the box above. Figure 1:...
Complete the mechanism for the generation of the electrophile used for chlorination in electrophilic aromatic substitution....
Complete the mechanism for the generation of the electrophile used for chlorination in electrophilic aromatic substitution. Add curved arrows, bonds, electron pairs, and charges where indicated. Add a curved arrow. Complete the structure and highlight the electrophilic chlorine atom. 0 8— A : ci : - -
Complete the mechanism for generation of the electrophile used for bromination in electrophilic aromatic substitution. Add...
Complete the mechanism for generation of the electrophile used
for bromination in electrophilic aromatic substitution. Add curved
arrows, bonds, electron pairs, and charges where indicated.
Salicylamide is another active pharmaceutical ingredient that is commonly used for pain relief. A...
Salicylamide is another active pharmaceutical ingredient that is commonly used for pain relief. A derivative of salicyalamide can be prepared in the following electrophilic aromatic substitution reaction. Note: The combination of Nal and NaOCl generates electrophilic iodine () to be used in the EAS reaction). NH2 NH2 Nal NaOCI salicylamide mono-iodinated product Using "" as the electrophile, draw the complete mechanism for the predicted major product. Show appropriate resonance structures for the sigma complex. [3 Marks]
Salicylamide is another active...
Pyrrole undergoes nitration by electrophilic aromatic substitution. Complete the mechanism by drawing curved arrows, the structure...
Pyrrole undergoes nitration by electrophilic aromatic substitution.
Complete the mechanism by drawing curved arrows, the structure of
the charged intermediate, and the structure of the major uncharged
product. Omit electron lone pairs and bases.
Trole undergoes nitration by electrophilic aromatic substitution. Complete the mechanism by drawing curved arrows, the structure of the charged intermediate, and the structure of the major uncharged product. Omit electron lone pairs and bases.
Provide a complete mechanism for the above Electrophilic Aromatic Substitution Reaction. Pay close attention to details,...
Provide a complete mechanism for the above Electrophilic Aromatic Substitution Reaction. Pay close attention to details, including lone pairs, formal charges and the use of curved arrows. B) Why is toluene an ortho/para director? Explain, using drawings to support your answer.
Complete the mechanism for the electrophilic aromatic substitution of trifluorobenzene. Do not bother placing all of the lone pairs of electrons on the F atoms, but be sure to place them on all other atoms as needed. Do not draw curved arrows between the resonance structures.
Aromatic heterocycles also undergo electrophilic aromatic
substitution reactions. When furan is treated with an electrophile,
the electrophile is installed only at the C-2 position. Explain why
this reaction occurs only at the C-2 position, rather than the C-3
positions.(explain in words and resonance structures)
Question 2 (10 pts). Aromatic heterocycles can undergo EAS reactions. When furan (below) is treated with an electrophile, an EAS reaction occurs in which the electrophile is installed only at carbon 2, not carbon 3. Explain...
+ H+ Electrophilic aromatic substitution is a two-step process. In the first step an electrophile, here generically shown as Y , reacts with the aromatic ring to form a resonance-stabilized carbocation intermediate. In the second step, loss of a proton from the site of attack restores aromaticity to the ring and completes the reaction. Draw curved arrows to show the movement of electrons in this step of the mechanism. Arrow-pushing Instructions no XT + H H- A
Provide the reaction for chlorination of benzene using electrophilic aromatic substitution, it's complete mechanism including formation of "super" electrophile, and a completely labeled reaction coordinate energy diagram. 1.
250 ChemActivity 29 Electrophilic Aromatic Substitution no ChemActivity 29 Part A: Electrophilic Aromatic Substitution (What products are formed when a strong electrophile is added to benzene?) Model 1: (review) Electrophilic Addition of HCI Rani o g cyclohexene carbocation intermediate Run 2 U X benzene This product carbocation intermediate DOES NOT Critical Thinking Questions 1 For Rxn I (above) draw curved arrows showing the mechanism of electrophilic addition of HCl. Include an appropriate carbocation intermediate in the box above. Figure 1:...
Complete the mechanism for the generation of the electrophile used for chlorination in electrophilic aromatic substitution. Add curved arrows, bonds, electron pairs, and charges where indicated. Add a curved arrow. Complete the structure and highlight the electrophilic chlorine atom. 0 8— A : ci : - -
Complete the mechanism for generation of the electrophile used
for bromination in electrophilic aromatic substitution. Add curved
arrows, bonds, electron pairs, and charges where indicated.
Salicylamide is another active pharmaceutical ingredient that is commonly used for pain relief. A derivative of salicyalamide can be prepared in the following electrophilic aromatic substitution reaction. Note: The combination of Nal and NaOCl generates electrophilic iodine () to be used in the EAS reaction). NH2 NH2 Nal NaOCI salicylamide mono-iodinated product Using "" as the electrophile, draw the complete mechanism for the predicted major product. Show appropriate resonance structures for the sigma complex. [3 Marks]
Salicylamide is another active...
Pyrrole undergoes nitration by electrophilic aromatic substitution.
Complete the mechanism by drawing curved arrows, the structure of
the charged intermediate, and the structure of the major uncharged
product. Omit electron lone pairs and bases.
Trole undergoes nitration by electrophilic aromatic substitution. Complete the mechanism by drawing curved arrows, the structure of the charged intermediate, and the structure of the major uncharged product. Omit electron lone pairs and bases.
Provide a complete mechanism for the above Electrophilic Aromatic Substitution Reaction. Pay close attention to details, including lone pairs, formal charges and the use of curved arrows. B) Why is toluene an ortho/para director? Explain, using drawings to support your answer.
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