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9.(2 pts) Which of the following structures is a viable reactant for the following reaction? SOCI2...
Which starting material would best accomplish this transformation? 1. SOCI2 2. CH3NH2 3. LiAlH4 4. H30*...
Which starting material would best accomplish this transformation? 1. SOCI2 2. CH3NH2 3. LiAlH4 4. H30* Н OH Br Which is the best starting material for the following reaction? CH3CH2NH2 ? pyridine HN o о NH2 С- CI OH Which are the best reagents for the following transformation? OCH3 core O 1. (CH3)2CHMgBr 2. H30+ 1. NaOH, heat 2. (CH3)2CHCH=PPh3 O 1. LiAlH4 2. TosCl, pyridine 3. (CH3)2CHCH Br O 1. DIBAL 2. (CH3)2CHCH=PPh3 What is the major product in...
In the lab, Cassandra the Chemist™ studied the reaction between 2-bromo-3-methyl pentane with a base under...
In the lab, Cassandra the Chemist™ studied the reaction between
2-bromo-3-methyl pentane with a base under the presence of heat.
During her studies, she found that the reaction rate doubled when
she doubled the amount of the base. Draw a full, arrow-pushing,
mechanism of the above reaction showing the most prevalent product
formed.
11. (22 pts) In the lab, Cassandra the Chemist"M pentane with a base under the presence of heat. During her studies, she found that the reaction studied...
Question 51 Which of the given structures are enantiomers of the boxed structure? Me Me F...
Question 51 Which of the given structures are enantiomers of the boxed structure? Me Me F Me Me OH Me HOH FEH GPI - н+он HF Y Me Me Me IV We were unable to transcribe this imageWe were unable to transcribe this imageQuestion 54 Which of the below is not an intermediate in the boxed reaction in the formation of the major product. H2SO4 dilute H2O HOH ph Ph нен Question 55 Which reagents below will give the greatest...
Which one of the structures below is not an intermediate in the mechanism of the following...
Which one of the structures below is not an intermediate in the mechanism of the following reaction? OH cat. H SO. + CH, OH OCH + H20 OH OH @OH A) B) C) -OH OCH OH2 OCH D) OCH OH Identify the product of the following reaction. A) 1) KMnO4, KOH, H20, heat 2) dilaq. HCI 3) SOCI 4) CH, CH2NH2 OH B) C) D) HO
2. Write out the required reagents/reaction conditions or Lewis structures for the productis) produced for 18...
2. Write out the required reagents/reaction conditions or Lewis structures for the productis) produced for 18 of the following 21 reactions. Answer only (18), otherwise only the first (18) will be graded (72 pts/4 pts each) NOTE: C(=O) represents C=0 a. CH3CH2OH → CH3-C(=O)-H b. CH3-C(=O)-CI CH3-C(=O)-CH3 C. CH3-CEC-H CH3CH2-C(=O)-H d. CH3-C(EO)-H H-CEN e. CH3-C(=O)-H (CH3)2-CH-OH f. CH3-C(=O)-CH3 + (CH3)2NH / H30 9. CH3-C(=O)-CH3 + CH3OH (2 equiv) / H30* → h. C6H5-CH3 C6H5-CO2H I. CH3-Mg-CI CH3-CO2H 1 CH3-CO2H CH3CH2-OH...
21. What is the major prodnct of the following reaction sequence? Br A) + enantomer Br...
21. What is the major prodnct of the following reaction sequence? Br A) + enantomer Br B) +enantiomer 七 Br C) + enantiomer D) Br 25. What is the major product of the following reaction sequence? 1. HBr (1 equiv) 2 HCI (1 equiv) A) B) CI Br C) Ci None of the above E)
Multistep reaction mechanisms Group Activity Treating (S)-2-butanol with HBr results in the following two step reaction: Step 1: CH3CH(OH)CH2CH3 + HBr ⇌ CH3CH(OH2)CH2CH3+ + Br- Step 2: CH3CH(OH2)CH2CH3+ + Br- ⇌ CH3CH(Br)CH2CH3 + H2O Draw a mechanism for e
Multistep reaction mechanisms Group ActivityTreating (S)-2-butanol with HBr results in the following two step reaction: Step 1: CH3CH(OH)CH2CH3 + HBr ⇌ CH3CH(OH2)CH2CH3+ + Br-Step 2: CH3CH(OH2)CH2CH3+ + Br- ⇌ CH3CH(Br)CH2CH3 + H2ODraw a mechanism for each step. Draw structures for all reactants and products, including correct stereochemistry (wedges and dashes). Show all the curved arrows in each step, and label each curved arrow according to whether it represents proton transfer, loss of a leaving group, nucleophilic attack, or carbocation rearrangement.
6. (4 pts.) Draw the two resonance structures of the enolate formed from the following reaction: 7. (4 pts) Draw th...
6. (4 pts.) Draw the two resonance structures of the enolate formed from the following reaction: 7. (4 pts) Draw the structure of an alkyl bromide (R-Br) and an alkoxide (R-O) that would provide the most efficient synthesis of the following ether by the Williamson ether synthesis. Target ether 8. (5 pts.) Draw a mechanism for the following E2 reaction. Draw the major product. Be sure to include any necessary H's in your structure as you draw the mechanism. OH...
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)
Which reaction sequence best accomplishes this transformation HCECH Br -Br (2R,3S)-2,3-dibromobutane A) 1. NaNH 2. CH,Br...
Which reaction sequence best accomplishes this transformation HCECH Br -Br (2R,3S)-2,3-dibromobutane A) 1. NaNH 2. CH,Br 1. NaNH, Bri H2 2. CH,Br Lindlar's catalyst B) HBr HBr 1. NaNH, 2. CH,Br 1. NaNH, 2. CH, Br C) Brz 1. NaNH, 2. CH,CH, Br D) Na NH 1. NaNH, 2. CH.BA 1. NaNH, 2CH.Br
Which starting material would best accomplish this transformation? 1. SOCI2 2. CH3NH2 3. LiAlH4 4. H30* Н OH Br Which is the best starting material for the following reaction? CH3CH2NH2 ? pyridine HN o о NH2 С- CI OH Which are the best reagents for the following transformation? OCH3 core O 1. (CH3)2CHMgBr 2. H30+ 1. NaOH, heat 2. (CH3)2CHCH=PPh3 O 1. LiAlH4 2. TosCl, pyridine 3. (CH3)2CHCH Br O 1. DIBAL 2. (CH3)2CHCH=PPh3 What is the major product in...
In the lab, Cassandra the Chemist™ studied the reaction between
2-bromo-3-methyl pentane with a base under the presence of heat.
During her studies, she found that the reaction rate doubled when
she doubled the amount of the base. Draw a full, arrow-pushing,
mechanism of the above reaction showing the most prevalent product
formed.
11. (22 pts) In the lab, Cassandra the Chemist"M pentane with a base under the presence of heat. During her studies, she found that the reaction studied...
Question 51 Which of the given structures are enantiomers of the boxed structure? Me Me F Me Me OH Me HOH FEH GPI - н+он HF Y Me Me Me IV We were unable to transcribe this imageWe were unable to transcribe this imageQuestion 54 Which of the below is not an intermediate in the boxed reaction in the formation of the major product. H2SO4 dilute H2O HOH ph Ph нен Question 55 Which reagents below will give the greatest...
Which one of the structures below is not an intermediate in the mechanism of the following reaction? OH cat. H SO. + CH, OH OCH + H20 OH OH @OH A) B) C) -OH OCH OH2 OCH D) OCH OH Identify the product of the following reaction. A) 1) KMnO4, KOH, H20, heat 2) dilaq. HCI 3) SOCI 4) CH, CH2NH2 OH B) C) D) HO
2. Write out the required reagents/reaction conditions or Lewis structures for the productis) produced for 18 of the following 21 reactions. Answer only (18), otherwise only the first (18) will be graded (72 pts/4 pts each) NOTE: C(=O) represents C=0 a. CH3CH2OH → CH3-C(=O)-H b. CH3-C(=O)-CI CH3-C(=O)-CH3 C. CH3-CEC-H CH3CH2-C(=O)-H d. CH3-C(EO)-H H-CEN e. CH3-C(=O)-H (CH3)2-CH-OH f. CH3-C(=O)-CH3 + (CH3)2NH / H30 9. CH3-C(=O)-CH3 + CH3OH (2 equiv) / H30* → h. C6H5-CH3 C6H5-CO2H I. CH3-Mg-CI CH3-CO2H 1 CH3-CO2H CH3CH2-OH...
21. What is the major prodnct of the following reaction sequence? Br A) + enantomer Br B) +enantiomer 七 Br C) + enantiomer D) Br 25. What is the major product of the following reaction sequence? 1. HBr (1 equiv) 2 HCI (1 equiv) A) B) CI Br C) Ci None of the above E)
6. (4 pts.) Draw the two resonance structures of the enolate formed from the following reaction: 7. (4 pts) Draw the structure of an alkyl bromide (R-Br) and an alkoxide (R-O) that would provide the most efficient synthesis of the following ether by the Williamson ether synthesis. Target ether 8. (5 pts.) Draw a mechanism for the following E2 reaction. Draw the major product. Be sure to include any necessary H's in your structure as you draw the mechanism. OH...
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)
Which reaction sequence best accomplishes this transformation HCECH Br -Br (2R,3S)-2,3-dibromobutane A) 1. NaNH 2. CH,Br 1. NaNH, Bri H2 2. CH,Br Lindlar's catalyst B) HBr HBr 1. NaNH, 2. CH,Br 1. NaNH, 2. CH, Br C) Brz 1. NaNH, 2. CH,CH, Br D) Na NH 1. NaNH, 2. CH.BA 1. NaNH, 2CH.Br
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