Show the mechanism for the dinitration of 2-benzylpyridine. Use resonance structures to explain the 2,4-substitution pattern...
Homework Answers
Nitration takes place on benzene ring rather than pyridine ring because pyridine ring is electron poor (when compared to benzene) due to the presence of the nitrogen, which pulls electrons towards itself via the inductive effect, and thus it doesn't undergo aromatic electrophilic substitution easily.
Now, in benzene ring nitration takes place at ortho and para position because -CH2 group attached to the benzene ring has ortho, para directing effect due to the higher electron density on these positions in its resonating structures.
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Show the mechanism for the dinitration of 2-benzylpyridine. Use
resonance structures to explain the 2,4-substitution pattern...
7. Explain with the use of appropriate resonance structures, the regioselectivity of the electrophilic aromatic substitution...
7. Explain with the use of appropriate resonance structures, the regioselectivity of the electrophilic aromatic substitution reaction - i.e. why is electrophilic aromatic substitution of acetanilide less favoured at the 3-position than at the 2- or the 4-positions.
Draw the reaction mechanism for the nitration of methyl benzoate to methyl nitrobenzoate, please show all...
Draw the reaction mechanism for the nitration of methyl benzoate to methyl nitrobenzoate, please show all resonance structures for each possible substitution position to explain why methyl m-nitrobenzoate was the favored isomer.
Nitration of phenols is a classic example of an electrophilic aromatic substitution reaction. a) Why does...
Nitration of phenols is a classic example of an electrophilic aromatic substitution reaction. a) Why does the nitration of phenol (hydroxybenzene) proceed only in the ortho- and para-positions on the ring? b) Draw the resonance structures that highlight the ortho- and para-directing nature of hydroxy substituents. Make sure to include the structures that showcase the movement of the charges in the ring.
1. a. Draw the structures of A and B (resonance structures), and C (tetrahedral intermediate). Us...
Please help!!
1. a. Draw the structures of A and B (resonance structures), and C (tetrahedral intermediate). Use curved arrows to show how each structure is formed b. Draw the structure of the Nu: you would use to make CompoundD O (tetrahedral intermediate) он c. (i) Explain why H does not react with a pi bond in the ring in Compound Z. (ii) Which resonance structure, A or B, shows why reacting H with the ketone makes the more reactive?...
11. Show the product and use arrows to show the mechanism for the Nucleophilic Aromatic Substitution...
11. Show the product and use arrows to show the mechanism for
the Nucleophilic Aromatic Substitution Reaction below. Assume
benzyne is an intermediate. Just write B: to represent a strong
base reacting with the aromatic ring. (5 points)
11. Show the product and use arrows to show the mechanism for the Nucleophilic Aromatic Substitution Reaction below. Assume benzyne is an intermediate. Just write B: to represent a strong base reacting with the aromatic ring. (5 points) strong base NH CI
1) Provide a detailed electron pushing mechanism for the below transformation. Show ALL relevant resonance structures...
1) Provide a detailed electron pushing mechanism for the below transformation. Show ALL relevant resonance structures to help explain why the para product is the major organic product. (Note: your electron pushing mechanism should include formation of the electrophile) (4 points) Cl AICl3
2. There are three possible resonance structures of phenyl ethanoate; draw them and show electron pushing...
2. There are three possible resonance structures of phenyl ethanoate; draw them and show electron pushing arrows. Then draw the overall resonance hybrid. (1 point) Hybrid
Using resonance structures as part of your answer, explain why Br in bromobenzene is: a. A...
Using resonance structures as part of your answer, explain why Br in bromobenzene is: a. A mild ring deactivator b. An o-, p-director. [Note: It is not enough to use resonance structures from part "a" to "prove" part "b". One must show that o-, p-attack is faster, i.e. has lower Ea (AGa) by actually showing an electrophile, e.g. the generalized E+, attacking at the o-, m-& p-positions and, using Hammond's Principle, explain why the o-, p-attacks are favored.] Explain what...
Draw the mechanism for the following transformation. Include all relevant resonance structures. Show the movement of...
Draw the mechanism for the following transformation. Include all
relevant resonance structures. Show the movement of electrons with
arrows.
Draw the mechanism for the following transformation. Include all relevant resonance structures. Show the movement of electrons with arrows. (14 points) Pro excess HBr Br
Show the mechanism of the synthesis of Omeprazole, include resonance structures and curly arrows.
Show the mechanism of the synthesis of Omeprazole, include resonance structures and curly arrows.
7. Explain with the use of appropriate resonance structures, the regioselectivity of the electrophilic aromatic substitution reaction - i.e. why is electrophilic aromatic substitution of acetanilide less favoured at the 3-position than at the 2- or the 4-positions.
Please help!!
1. a. Draw the structures of A and B (resonance structures), and C (tetrahedral intermediate). Use curved arrows to show how each structure is formed b. Draw the structure of the Nu: you would use to make CompoundD O (tetrahedral intermediate) он c. (i) Explain why H does not react with a pi bond in the ring in Compound Z. (ii) Which resonance structure, A or B, shows why reacting H with the ketone makes the more reactive?...
11. Show the product and use arrows to show the mechanism for
the Nucleophilic Aromatic Substitution Reaction below. Assume
benzyne is an intermediate. Just write B: to represent a strong
base reacting with the aromatic ring. (5 points)
11. Show the product and use arrows to show the mechanism for the Nucleophilic Aromatic Substitution Reaction below. Assume benzyne is an intermediate. Just write B: to represent a strong base reacting with the aromatic ring. (5 points) strong base NH CI
1) Provide a detailed electron pushing mechanism for the below transformation. Show ALL relevant resonance structures to help explain why the para product is the major organic product. (Note: your electron pushing mechanism should include formation of the electrophile) (4 points) Cl AICl3
2. There are three possible resonance structures of phenyl ethanoate; draw them and show electron pushing arrows. Then draw the overall resonance hybrid. (1 point) Hybrid
Using resonance structures as part of your answer, explain why Br in bromobenzene is: a. A mild ring deactivator b. An o-, p-director. [Note: It is not enough to use resonance structures from part "a" to "prove" part "b". One must show that o-, p-attack is faster, i.e. has lower Ea (AGa) by actually showing an electrophile, e.g. the generalized E+, attacking at the o-, m-& p-positions and, using Hammond's Principle, explain why the o-, p-attacks are favored.] Explain what...
Draw the mechanism for the following transformation. Include all
relevant resonance structures. Show the movement of electrons with
arrows.
Draw the mechanism for the following transformation. Include all relevant resonance structures. Show the movement of electrons with arrows. (14 points) Pro excess HBr Br
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