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Spectroscopy Problems
15
Copyright © 2017 Pearson Education, Inc.
27.
Chapter 7
A compound with the following IR spectrum was formed by a reaction with 1-propyne. If the number of
carbons in the reactant and product is the same, what compound is formed and what reaction conditions
produced this compound?
1600
1800
4000 3800 3600 3400 3200 3000 2800 2600 2400 2200 2000
1400 1200 1000
800
600
450
100
90
80
70
60
50
40
30
20
10
0
0.0
0.05
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
2.0
A
B
S
O
R
B
A
N
C
E
%
T
R
A
N
S
M
I
T
T
A
N
C
E
28.
Identify the compound with molecular formula
C
4
H
8
O
2
that gives the following
1
H
and
13
C NMR
spectra.
1
12 11 10
1
6
9
8
7
6
5
4
3
2
1
0
240 220 200 180 160 140 120 100 80 60 40 20
0
2.6 ppm.
Offset: 0.4 ppm.