© 2013 Pearson Education, Inc. 5. In the above spectrum, why are there only two signals present when there are a total of 12 protons? 6. Why does the far left methyl group have such a higher chemical shift (3.20 ppm) than the

Organic Chemistry
9th Edition
ISBN:9781305080485
Author:John E. McMurry
Publisher:John E. McMurry
Chapter5: Stereochemistry At Tetrahedral Centers
Section5.5: Sequence Rules For Specifying Configuration
Problem 8P
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-Он
-NH
12
11
10
7
6
2
1
ppm
CH-Ar
H,C-C=0
CH,X H,C-C=C
CH,
RCO,H
RCHO
Ar-H
С-С-Н
CH,
CH-0
CH
3.
Transcribed Image Text:-Он -NH 12 11 10 7 6 2 1 ppm CH-Ar H,C-C=0 CH,X H,C-C=C CH, RCO,H RCHO Ar-H С-С-Н CH, CH-0 CH 3.
CH3
34.d mm
CH3
0-C-CH3
CH3
11.5 mm
10
9
8
7
4
3
8 (ppm)
© 2013 Pearson Education, Inc.
5. In the above spectrum, why are there only two signals present when there are a total of 12
protons?
6. Why does the far left methyl group have such a higher chemical shift (3.20 ppm) than the
remaining far right methyl groups (1.20 ppm)?
Transcribed Image Text:CH3 34.d mm CH3 0-C-CH3 CH3 11.5 mm 10 9 8 7 4 3 8 (ppm) © 2013 Pearson Education, Inc. 5. In the above spectrum, why are there only two signals present when there are a total of 12 protons? 6. Why does the far left methyl group have such a higher chemical shift (3.20 ppm) than the remaining far right methyl groups (1.20 ppm)?
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