Homework Answers
In both Ortho and para
substitution the intermediate carbonation is resonance stabilized
by the attached phenyl ring. But in meta substitution the
intermediate is not stabilized by the other phenyl ring. So phenyl
ring is Ortho and para directing.
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2. Using resonance contributors for the intermediate carbocation, explain why a phenyl group is an ortho-para...
p-Toluidine (4-methylaniline) can be readily converted into the five compounds shown below from a common intermediate....
p-Toluidine (4-methylaniline) can be readily converted into the five compounds shown below from a common intermediate. Indicate the structure of the intermediate and the reagents required for these transformations Br NH2 CN ОН Using resonance contributors for the intermediate carbocation, explain why a phenyl group is an ortho-para director FeCl. Cl2 + Cl
Objectives - Section 1 • Identify a substituent as an ortho para director or a meta director, Draw the resonance st...
Objectives - Section 1 • Identify a substituent as an ortho para director or a meta director, Draw the resonance structure that explains the relative directing ability of a specific substituent. Classify a substituent as an activating or a deactivating group. Explain why the halogens are ortho/para directors but are deactivators. • 1. Draw the mechanism of the reaction below and use resonance structures of the arenium ion intermediate to explain why the starting material is an ortho/para director
Using resonance structures and a brief explanation, explain why phenol (C6H5OH) is an ortho-para director (25...
Using resonance structures and a brief explanation, explain why phenol (C6H5OH) is an ortho-para director (25 pts).
director in an EAS reaction . Use the structures Of all of its resonance contributors to...
director in an EAS reaction . Use the structures Of all of its resonance contributors to support 2. Explain why anisole is an ortho-/para- in your written your answer Refer to structures explanation. 20 20 CH₃ 6/20
In nitration of acetanilide(synthesis of p-nitroaniline) main product is ortho and para. Explain why ortho and...
In nitration of acetanilide(synthesis of p-nitroaniline) main product is ortho and para. Explain why ortho and para product is major in resonance and mechanism term.
5. Toluene undergoes nitration at the Ortho position to produce a nonaromatic, resonance-stabilized, carbocation intermediate, which...
5. Toluene undergoes nitration at the Ortho position to produce
a nonaromatic, resonance-stabilized, carbocation intermediate,
which loses a proton to form a neutral substituted product.
Complete the reaction mechanism below showing movement of electrons
and all possible resonance structures for the carbocation
intermediate. (4 points)
5. Toluene undergoes nitration at the Ortho position to produce a nonaromatic, resonance- stabilized, carbocation intermediate, which loses a proton to form a neutral substituted product. Complete the reaction mechanism below showing movement of electrons...
Provide a resonance structures which explain why ortho and para nitrophenol are much more acidic than...
Provide a resonance structures which explain why ortho and para nitrophenol are much more acidic than phenol
5. Toluene undergoes nitration at the Ortho position to produce a nonaromatic, resonance stabilized, carbocation intermediate,...
5. Toluene undergoes nitration at the Ortho position to produce a nonaromatic, resonance stabilized, carbocation intermediate, which loses a proton to form a neutral substituted product Complete the reaction mechanism below showing movement of electrons and all possible resonance structures for the carbocation intermediate. (4 points) HNO H2SO4 ON H,0*
Label the following as activating (A) or deactivating (D), and then also as ortho/para directors (OP)...
Label the following as activating (A) or deactivating (D), and then also as ortho/para directors (OP) or meta directors (M). Write the answer below each group. N "Here with other ty A/D? = = = = OP/M? = f) Using resonance structures, explain why a nitro group is "meta-directing" (i.e. does the nitro group actually affect the meta positions?) g) As mentioned in class, the halogens are a bit anomalous as substituents on the aromatic ring: they are deactivating groups,...
Why can phenoxide's negative charge only be stabilized through resonance in the ortho/para position but not...
Why can phenoxide's negative charge only be stabilized through resonance in the ortho/para position but not the meta position? Provide a drawing to explain your answer.
p-Toluidine (4-methylaniline) can be readily converted into the five compounds shown below from a common intermediate. Indicate the structure of the intermediate and the reagents required for these transformations Br NH2 CN ОН Using resonance contributors for the intermediate carbocation, explain why a phenyl group is an ortho-para director FeCl. Cl2 + Cl
Objectives - Section 1 • Identify a substituent as an ortho para director or a meta director, Draw the resonance structure that explains the relative directing ability of a specific substituent. Classify a substituent as an activating or a deactivating group. Explain why the halogens are ortho/para directors but are deactivators. • 1. Draw the mechanism of the reaction below and use resonance structures of the arenium ion intermediate to explain why the starting material is an ortho/para director
director in an EAS reaction . Use the structures Of all of its resonance contributors to support 2. Explain why anisole is an ortho-/para- in your written your answer Refer to structures explanation. 20 20 CH₃ 6/20
5. Toluene undergoes nitration at the Ortho position to produce
a nonaromatic, resonance-stabilized, carbocation intermediate,
which loses a proton to form a neutral substituted product.
Complete the reaction mechanism below showing movement of electrons
and all possible resonance structures for the carbocation
intermediate. (4 points)
5. Toluene undergoes nitration at the Ortho position to produce a nonaromatic, resonance- stabilized, carbocation intermediate, which loses a proton to form a neutral substituted product. Complete the reaction mechanism below showing movement of electrons...
5. Toluene undergoes nitration at the Ortho position to produce a nonaromatic, resonance stabilized, carbocation intermediate, which loses a proton to form a neutral substituted product Complete the reaction mechanism below showing movement of electrons and all possible resonance structures for the carbocation intermediate. (4 points) HNO H2SO4 ON H,0*
Label the following as activating (A) or deactivating (D), and then also as ortho/para directors (OP) or meta directors (M). Write the answer below each group. N "Here with other ty A/D? = = = = OP/M? = f) Using resonance structures, explain why a nitro group is "meta-directing" (i.e. does the nitro group actually affect the meta positions?) g) As mentioned in class, the halogens are a bit anomalous as substituents on the aromatic ring: they are deactivating groups,...
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