5. Which of the following molecules will show two peaks with an area ratio of 6:4 in its 'H NMR spectrum ? CH CH3 CH3 OCH, co,CH, OCH3 ČOCH3 CH, II IV V II A) 1 B) II C) III D) IV E) V

Organic Chemistry
9th Edition
ISBN:9781305080485
Author:John E. McMurry
Publisher:John E. McMurry
Chapter13: Structure Determination: Nuclear Magnetic Resonance Spectroscopy
Section13.8: More Complex Spin–spin Splitting Patterns
Problem 15P: 3-Bromo-1-phenyl-1-propene shows a complex NMR spectrum in which the vinylic proton at C2 is coupled...
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5. Which of the following molecules will show two peaks with an area ratio of 6:4 in its 'H NMR
spectrum ?
CH
CH3
OCH,
Co,CH,
CH3
OCH3
ČOCH3
ČH3
II
IV
V
II
A) I
B) II
C) II
D) IV
E) V
6. The proton(s) on which C will produce a splitting pattern that is a doublet in its 'H NMR spectrum ?
1 23 4 5
CH3CHCH,CH,CH,C1
C1
A) 1
B) 2
C) 3
D) 4
E) 5
7. The following compound will have a proton NMR spectrum that shows:
-CH3
H3C
C-CH3
A) two singlets, area ratio 3:1.
B) two singlets, area ratio 9:1.
C) three singlets, area ratio 3:3:6.
D) four singlets, area ratio 3:2:6:1.
E) six singlets, area ratio 3:3:3:1:1:1.
Transcribed Image Text:5. Which of the following molecules will show two peaks with an area ratio of 6:4 in its 'H NMR spectrum ? CH CH3 OCH, Co,CH, CH3 OCH3 ČOCH3 ČH3 II IV V II A) I B) II C) II D) IV E) V 6. The proton(s) on which C will produce a splitting pattern that is a doublet in its 'H NMR spectrum ? 1 23 4 5 CH3CHCH,CH,CH,C1 C1 A) 1 B) 2 C) 3 D) 4 E) 5 7. The following compound will have a proton NMR spectrum that shows: -CH3 H3C C-CH3 A) two singlets, area ratio 3:1. B) two singlets, area ratio 9:1. C) three singlets, area ratio 3:3:6. D) four singlets, area ratio 3:2:6:1. E) six singlets, area ratio 3:3:3:1:1:1.
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