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4. Which one of the following products is not expected to form in the following reaction?...
to form Which of the following possible Birch reduction products would not be expected CH3 CH3...
to form Which of the following possible Birch reduction products would not be expected CH3 CH3 0 CH3 A. B. C. Which of the following substrates would most likely undergo a successful nucleophilic aromatic substitution reaction with diethylamine? NO2 NO 2 NO 2 A. B. C. D. Which of the following resonance structures does not depict stabilization of the negative charge in the Meisenheimer complex? 0 A. The nitro group has which of the following effects in electrophilic aromatic substitution?...
8. For the reaction below dentify the nucleophile and the electro 9. The following reaction can...
8. For the reaction below dentify the nucleophile and the electro 9. The following reaction can be classified as a a) Addition b) rearrangement 10. Which of the following has the weakest bond between its atoms c) substitution d) Oxidation Brb ) Cic ) HBr d) HCI Short Answers: 11. A) Calculate the heat of the reaction given the bond dissociation energies. (5 pts) (CH),C-H + CI-CI → (CH3),c-ci + HCI 12. Give the structure of 3-Methylpentane (3 pts)
Indicate the cation that would most likely form on rearrangement of the following: 4. What is...
Indicate the cation that would most likely form on rearrangement of the following: 4. What is a product of the following sequence of elementary steps? 1. Electrophilic addition of H" 2. Carbocation rearrangement 3. Coordination involving Br (a) Br Br Br 5. The following compound is produced in a chemical reaction. Into what compound will it rearrange, if any? НО
organic chemistry 353 2. (4 pts.) Arrange the following in order of increasing electrophilic aromatic substitution...
organic chemistry 353
2. (4 pts.) Arrange the following in order of increasing electrophilic aromatic substitution reactivity (4 = most reactive): SO3H OH e 3. (4 pts.) Briefly describe why alkenes undergo addition and aromatic compounds undergo substitution. n Briefly describe w 4. (5 pts. Provide an example of an EAS reaction creates an arene that is less reactive than benzene (be specific, include reagents, you do not need to show the mechanism)
Electrophilic Addition 16,44 Draw the products formed when each compound is treated with one equivalent of...
Electrophilic Addition 16,44 Draw the products formed when each compound is treated with one equivalent of HBr. 10.45 Treatment of alkenes A and B with HBrave the same all halide C. Draw a mechanism for each reaction, including all reasonable resonance structures for any intermediate DOMOHON Bronson Her MCHACHA 16.46 Draw a stepwise mechanism for the following reaction.
CHM 260 (Fall 2019) HW #4 (conjugated alkenes/aromatic nomenclature and reactivity) *Due in class Monday, 10/28*...
CHM 260 (Fall 2019) HW #4 (conjugated alkenes/aromatic nomenclature and reactivity) *Due in class Monday, 10/28* 1) Consider the reactions between hexa-1,4-diene and HBr (reaction A) and hexa-2,4-diene and HBr (reaction B) as shown below: (6 pts total) HBr HBO ? ? Reaction A Reaction B - which reaction will involve a carbocation that can be stabilized by resonance? Briefly explain why. - write out the mechanistic steps for reaction of hexa-2,4-diene with HBr (hint: you only need to consider...
Question 5 (1.5 pts] Which one of the following statements about the organic products of Reaction...
Question 5 (1.5 pts] Which one of the following statements about the organic products of Reaction #4 is correct? Reaction #4 KMnO,,H,O, NaOH, cold Both OH groups occupy axial positions Both OH groups occupy equatorial positions One OH group occupies an axial position while the other OH group occupies an equatorial position None of the above Question 6 (1.5 pts) How many organic products are formed in Reaction #5? Hints The alkenes react sequentially, rather than at the same time...
4.help, this got me really confused. ORGANIC CHEMISTRY 353 UPPER LEVEL. THANKS 1. (4 pts) Arrange...
4.help, this got me really confused. ORGANIC CHEMISTRY 353 UPPER
LEVEL. THANKS
1. (4 pts) Arrange the following compounds in order of increasing acidity (4 = most acidic): HH Meo OME 2. (4 pts.) Arrange the following in order of increasing electrophilic aromatic substitution reactivity (4 = most reactive): Br OMe 3. (4 pts.) Briefly describe why alkenes undergo addition and aromatic compounds undergo substitution. 4. (5 pts. Provide an example of an EAS reaction creates an arene that is...
QUESTION 2 1. Which one of the following statements is true? (HX is either HCl or HBr) Alkynes undergo electrop...
QUESTION 2 1. Which one of the following statements is true? (HX is either HCl or HBr) Alkynes undergo electrophilic substitution reactions with HX to give halogenated alkenes. Adding an excess of HX to an alkyne gftens times will stop the reaction at the alkene step instead of forming the halogenated alkane. When adding one mole of HX to an alkyne, regioselective Markovnikov addition is observed for the alkene product typically exhibiting trans stereochemistry When adding one mole of HX...
Question 5 (1.5 pts] Which one of the following statements about the organic products of Reaction...
Question 5 (1.5 pts] Which one of the following statements about the organic products of Reaction #4 is correct? Reaction #4 KMnO4, H,O, NaOH, cold Both OH groups occupy axial positions Both OH groups occupy equatorial positions o One OH group occupies an axial position while the other OH group occupies an equatorial position O None of the above Question 6 (1.5 pts) How many organic products are formed in Reaction #5? Hints The alkenes react sequentially, rather than at...
to form Which of the following possible Birch reduction products would not be expected CH3 CH3 0 CH3 A. B. C. Which of the following substrates would most likely undergo a successful nucleophilic aromatic substitution reaction with diethylamine? NO2 NO 2 NO 2 A. B. C. D. Which of the following resonance structures does not depict stabilization of the negative charge in the Meisenheimer complex? 0 A. The nitro group has which of the following effects in electrophilic aromatic substitution?...
8. For the reaction below dentify the nucleophile and the electro 9. The following reaction can be classified as a a) Addition b) rearrangement 10. Which of the following has the weakest bond between its atoms c) substitution d) Oxidation Brb ) Cic ) HBr d) HCI Short Answers: 11. A) Calculate the heat of the reaction given the bond dissociation energies. (5 pts) (CH),C-H + CI-CI → (CH3),c-ci + HCI 12. Give the structure of 3-Methylpentane (3 pts)
Indicate the cation that would most likely form on rearrangement of the following: 4. What is a product of the following sequence of elementary steps? 1. Electrophilic addition of H" 2. Carbocation rearrangement 3. Coordination involving Br (a) Br Br Br 5. The following compound is produced in a chemical reaction. Into what compound will it rearrange, if any? НО
organic chemistry 353
2. (4 pts.) Arrange the following in order of increasing electrophilic aromatic substitution reactivity (4 = most reactive): SO3H OH e 3. (4 pts.) Briefly describe why alkenes undergo addition and aromatic compounds undergo substitution. n Briefly describe w 4. (5 pts. Provide an example of an EAS reaction creates an arene that is less reactive than benzene (be specific, include reagents, you do not need to show the mechanism)
Electrophilic Addition 16,44 Draw the products formed when each compound is treated with one equivalent of HBr. 10.45 Treatment of alkenes A and B with HBrave the same all halide C. Draw a mechanism for each reaction, including all reasonable resonance structures for any intermediate DOMOHON Bronson Her MCHACHA 16.46 Draw a stepwise mechanism for the following reaction.
CHM 260 (Fall 2019) HW #4 (conjugated alkenes/aromatic nomenclature and reactivity) *Due in class Monday, 10/28* 1) Consider the reactions between hexa-1,4-diene and HBr (reaction A) and hexa-2,4-diene and HBr (reaction B) as shown below: (6 pts total) HBr HBO ? ? Reaction A Reaction B - which reaction will involve a carbocation that can be stabilized by resonance? Briefly explain why. - write out the mechanistic steps for reaction of hexa-2,4-diene with HBr (hint: you only need to consider...
Question 5 (1.5 pts] Which one of the following statements about the organic products of Reaction #4 is correct? Reaction #4 KMnO,,H,O, NaOH, cold Both OH groups occupy axial positions Both OH groups occupy equatorial positions One OH group occupies an axial position while the other OH group occupies an equatorial position None of the above Question 6 (1.5 pts) How many organic products are formed in Reaction #5? Hints The alkenes react sequentially, rather than at the same time...
4.help, this got me really confused. ORGANIC CHEMISTRY 353 UPPER
LEVEL. THANKS
1. (4 pts) Arrange the following compounds in order of increasing acidity (4 = most acidic): HH Meo OME 2. (4 pts.) Arrange the following in order of increasing electrophilic aromatic substitution reactivity (4 = most reactive): Br OMe 3. (4 pts.) Briefly describe why alkenes undergo addition and aromatic compounds undergo substitution. 4. (5 pts. Provide an example of an EAS reaction creates an arene that is...
QUESTION 2 1. Which one of the following statements is true? (HX is either HCl or HBr) Alkynes undergo electrophilic substitution reactions with HX to give halogenated alkenes. Adding an excess of HX to an alkyne gftens times will stop the reaction at the alkene step instead of forming the halogenated alkane. When adding one mole of HX to an alkyne, regioselective Markovnikov addition is observed for the alkene product typically exhibiting trans stereochemistry When adding one mole of HX...
Question 5 (1.5 pts] Which one of the following statements about the organic products of Reaction #4 is correct? Reaction #4 KMnO4, H,O, NaOH, cold Both OH groups occupy axial positions Both OH groups occupy equatorial positions o One OH group occupies an axial position while the other OH group occupies an equatorial position O None of the above Question 6 (1.5 pts) How many organic products are formed in Reaction #5? Hints The alkenes react sequentially, rather than at...
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