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1. Using resonance structures, show why the amino group is activating. Consider an attack by the...
7. Using resonance structures show how the amino group would effect the electron density on the...
7. Using resonance structures show how the amino group would
effect the electron density on the ring carbons of the following
compound. Would you expect an electrophile to attack this molecule
at the ortho, meta or para position(s)?
8. Draw the structure of (3R,
4R)-3-(3-fluorophenyl)-4-formylhexan-2-one
ing resonance structures, show how the amino group would effect the electron density on the ring carbons of the following compound. Would you expect an electrophile to attack this molecule at the ortho, meta or...
consider the resonance structures of acetanilide and methylbenzoate provided above... Several resonance structures of acetanilide are...
consider the resonance structures of acetanilide and
methylbenzoate provided above...
Several resonance structures of acetanilide are shown below: gh Resonance structures involving the amide group Resonance structures involving the aromatic n-electrons QY Resonance structures involving the aromatic T-electrons The actual electron distribution in the acetanilide molecule can be estimated considering all these resonance forms, as shown below using partial negative charges. Therefore, the nitrogen atom at the amide substituent is classified as an ortho-para-directing group. Resonance structures of methyl-benzoate and...
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
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...
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
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,...
#1. Using curved arrows to symbolize electrons, write a complete reaction mechanism for the bromination of...
#1. Using curved arrows to symbolize electrons, write a complete reaction mechanism for the bromination of acetanilide to create the product. Include the resonance structures for any charged, delocalized intermediates that are involved. #2. Why does performing the experiment at 0 degrees Celsius help you identify some of the relative rates of reactivity? #3. Explain why a methyl group is a mildly activating group while a methoxy group is strong activating. #4. Explain why-- NH2 act as an activator and--...
3. Draw all possible resonance structures for aniline. Relate the resonance structures to why it is...
3. Draw all possible resonance structures for aniline. Relate the resonance structures to why it is an ortho/para director. 3. Drawhy it is нони 19 Pa
Consider the resonance structures of acetanilide and methyl benzoate provided above. How does the -COOCH3 substituent on...
Consider the resonance structures of acetanilide and methyl
benzoate provided above.
How does the -COOCH3 substituent on methyl benzoate direct?
Do the partial charges shown on either acetanilide or
methyl-benzoate activate or deactivate the electrophilic
substitution reaction?
Is there a correlation between directing and activating groups?
Explain.
I
Resonance structures of methyl-benzoate and the resulting partial charges are shown below. How does the benzoate group direct? 0: -1 =O :00 00 OA Several resonance structures of acetanilide are shown below:...
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).
7. Using resonance structures show how the amino group would
effect the electron density on the ring carbons of the following
compound. Would you expect an electrophile to attack this molecule
at the ortho, meta or para position(s)?
8. Draw the structure of (3R,
4R)-3-(3-fluorophenyl)-4-formylhexan-2-one
ing resonance structures, show how the amino group would effect the electron density on the ring carbons of the following compound. Would you expect an electrophile to attack this molecule at the ortho, meta or...
consider the resonance structures of acetanilide and
methylbenzoate provided above...
Several resonance structures of acetanilide are shown below: gh Resonance structures involving the amide group Resonance structures involving the aromatic n-electrons QY Resonance structures involving the aromatic T-electrons The actual electron distribution in the acetanilide molecule can be estimated considering all these resonance forms, as shown below using partial negative charges. Therefore, the nitrogen atom at the amide substituent is classified as an ortho-para-directing group. Resonance structures of methyl-benzoate and...
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
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...
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
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,...
3. Draw all possible resonance structures for aniline. Relate the resonance structures to why it is an ortho/para director. 3. Drawhy it is нони 19 Pa
Consider the resonance structures of acetanilide and methyl
benzoate provided above.
How does the -COOCH3 substituent on methyl benzoate direct?
Do the partial charges shown on either acetanilide or
methyl-benzoate activate or deactivate the electrophilic
substitution reaction?
Is there a correlation between directing and activating groups?
Explain.
I
Resonance structures of methyl-benzoate and the resulting partial charges are shown below. How does the benzoate group direct? 0: -1 =O :00 00 OA Several resonance structures of acetanilide are shown below:...
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