Homework Answers
Answer is c 2.
Explanation: The eclipsed conformations are less stable than the staggered conformations. Here 2 and 4 are eclipsed conformations. Between 2 and 4, the conformer 2 is least stable as the two methyl groups in the eclipsed conformation are in steric interaction.
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Which of the following Newman conformations is the least stable? сн. нс H₂h снз H2 H₃...
Which of the following Newman conformations is the most stable? Н.С. з. Н сн. Н3CCH, ре...
Which of the following Newman conformations is the most stable? Н.С. з. Н сн. Н3CCH, ре YCH, то Г не HOSH H2CH3 HECH Select one: е, 0 о o b. 2 с. 1 d. 4
CHEM261_01 Which of the following Newman conformations is the least stable? H₃C H3 CH₂ CHA Hzc...
CHEM261_01 Which of the following Newman conformations is the least stable? H₃C H3 CH₂ CHA Hzc i HAH - HA I Select one: a. 4 O b. 2
Which of the following Newman conformations is the third most stable? НСТchs CH3 CH3 не е,...
Which of the following Newman conformations is the third most stable? НСТchs CH3 CH3 не е, не існ, н, ң, не снне нен н сня нсон насн н І- а Select one: b. 1 с. 3
2) Order the following alkenes from most stable to least stable Нас Нас с-сн, н,с Hас +C- Нас н CHs -CH3 H Hе mos...
2) Order the following alkenes from most stable to least stable Нас Нас с-сн, н,с Hас +C- Нас н CHs -CH3 H Hе most stable least stable (a) I (b) I (c) I ll (d) 7) Order the following C-H bonds from strongest to weakest. strongest weakest (a) (b) (c) II (d) 8) Which of the following is represents the lowest energy transition state for the addition of BH, to 2-methyl-1-propene? quCH «сHs нСи Нас (b) (a) Нив--н H H...
predict the major product of the following reactions: H2, Pt E CH=CH2 CH3 d2 az но...
predict the major product of the following reactions:
H2, Pt E CH=CH2 CH3 d2 az но CH3 Hz Pd CH3 нс н с с н Сн, CHCl3 КОН 1. О, сна, 270, HOẶC
After siting down the C(2)-C(3) bond in the Newman projection of butane, which is the anti...
After siting down the C(2)-C(3) bond in the Newman projection of butane, which is the anti conformation? HC Н;С СН. Н. CH н. Н н CH; H- н H н CH; н H (b) Hн HC н CH H H Н. H Н H H н CH; (d) Н;С Н H CHỦ (f) а.а Ob.b Ос. с Od. d O e.e f. f
QUESTION 15 Which of the following mechanisms for the base-catalyzed hydrolysis of ethyl acetate is correct?...
QUESTION 15 Which of the following mechanisms for the base-catalyzed hydrolysis of ethyl acetate is correct? со: A We нс ТСІ G: осн. нс нсон, * осн B -: осн, со: . нус оҫн сн, н,со-сі нус, осн нсон, - осн, (осн. -н-осн D е H₂C a нска, нс OCH, нс оҫн, - OCH о А о в o С OD
After siting down the C(2)-C(3) bond in the Newman projection of butane, which is the anti...
After siting down the C(2)-C(3) bond in the Newman projection of butane, which is the anti conformation? нус H3C CH, Н. CH, н Н н Сн, H- H Н Сн; н Н (а) (b) H н Н (c) HC CH СН. H H H H H- H H H Н CH; Hс н Сн, a. a Obb Сс с Cd. d е. е f, f
Rank conformations bcd from most stable to least stable (most stable first) DUH ΤΗ HH Conformation...
Rank conformations bcd from most stable to least stable (most
stable first)
DUH ΤΗ HH Conformation A Question 2 (1.5 pts] Rank conformations B, C and D from most stable to least stable (most stable first C(CH.CH2CH3)3 CH(CH3)2 X H H H HH А Conformation B Conformation C Conformation D Question 3 (1.5 pts) Which one of the following statements about structure E is correct?
1. Select the best reagent(s) from the list below to accomplish the following transformations. In some...
1. Select the best reagent(s) from the list below to accomplish the following transformations. In some cases, more than one reagent may be required. 3. HSO3(aq) A.HCI B. Br? C. Hg(OAc)/H20 D. BH3 E. H30*/Hz0 E. Hz02 G. Os04 H. Brz/Hz0 NaBH4 J. H2O, in aq NaOH Reagent(s)? NaHSO3 Product CH3 Starting Material сн. Н.c = — сна BR — Br Br CH₂ На сна нс сна HC нас нас н сну нас НАС СНА оfo/Acal НО н а )...
Which of the following Newman conformations is the most stable? Н.С. з. Н сн. Н3CCH, ре YCH, то Г не HOSH H2CH3 HECH Select one: е, 0 о o b. 2 с. 1 d. 4
CHEM261_01 Which of the following Newman conformations is the least stable? H₃C H3 CH₂ CHA Hzc i HAH - HA I Select one: a. 4 O b. 2
Which of the following Newman conformations is the third most stable? НСТchs CH3 CH3 не е, не існ, н, ң, не снне нен н сня нсон насн н І- а Select one: b. 1 с. 3
2) Order the following alkenes from most stable to least stable Нас Нас с-сн, н,с Hас +C- Нас н CHs -CH3 H Hе most stable least stable (a) I (b) I (c) I ll (d) 7) Order the following C-H bonds from strongest to weakest. strongest weakest (a) (b) (c) II (d) 8) Which of the following is represents the lowest energy transition state for the addition of BH, to 2-methyl-1-propene? quCH «сHs нСи Нас (b) (a) Нив--н H H...
predict the major product of the following reactions:
H2, Pt E CH=CH2 CH3 d2 az но CH3 Hz Pd CH3 нс н с с н Сн, CHCl3 КОН 1. О, сна, 270, HOẶC
After siting down the C(2)-C(3) bond in the Newman projection of butane, which is the anti conformation? HC Н;С СН. Н. CH н. Н н CH; H- н H н CH; н H (b) Hн HC н CH H H Н. H Н H H н CH; (d) Н;С Н H CHỦ (f) а.а Ob.b Ос. с Od. d O e.e f. f
QUESTION 15 Which of the following mechanisms for the base-catalyzed hydrolysis of ethyl acetate is correct? со: A We нс ТСІ G: осн. нс нсон, * осн B -: осн, со: . нус оҫн сн, н,со-сі нус, осн нсон, - осн, (осн. -н-осн D е H₂C a нска, нс OCH, нс оҫн, - OCH о А о в o С OD
After siting down the C(2)-C(3) bond in the Newman projection of butane, which is the anti conformation? нус H3C CH, Н. CH, н Н н Сн, H- H Н Сн; н Н (а) (b) H н Н (c) HC CH СН. H H H H H- H H H Н CH; Hс н Сн, a. a Obb Сс с Cd. d е. е f, f
Rank conformations bcd from most stable to least stable (most
stable first)
DUH ΤΗ HH Conformation A Question 2 (1.5 pts] Rank conformations B, C and D from most stable to least stable (most stable first C(CH.CH2CH3)3 CH(CH3)2 X H H H HH А Conformation B Conformation C Conformation D Question 3 (1.5 pts) Which one of the following statements about structure E is correct?
1. Select the best reagent(s) from the list below to accomplish the following transformations. In some cases, more than one reagent may be required. 3. HSO3(aq) A.HCI B. Br? C. Hg(OAc)/H20 D. BH3 E. H30*/Hz0 E. Hz02 G. Os04 H. Brz/Hz0 NaBH4 J. H2O, in aq NaOH Reagent(s)? NaHSO3 Product CH3 Starting Material сн. Н.c = — сна BR — Br Br CH₂ На сна нс сна HC нас нас н сну нас НАС СНА оfo/Acal НО н а )...
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