N
X
C
Hal
O
N
S
P Si
Natural
Products
Solvents
C
C
C
C C
C
4.11 Carbonyl Compounds
143
Tertiary Amides:
13 C Chemical Shifts of Lactams (δ in ppm)
H 3 C
O
N
H 3 C
O
N
H 3 C
O
N
H 3 C
O
N
CH 3
CH 3
H 3 C
O
N
H
H 3 C
O
N
H
H 3 C
O
N
H
H 3 C
O
N
H
H 3 C
O
N
H
H 3 C
O
N
H
O
N
HN
O
HN
O
HN
O
N
O
169.8
168.1
47.5
138.2
143.2
143.2
124.1
126.7
128.7
129.1
120.4
127.6
127.6
129.1
125.1
105.1
123.2
139.7
120.8
142.0
136.1
106.6
169.5
169.1
170.0
169.6
172.2
170.1
168.3
168.6
169.0
22.5
22.7
22.9
21.5
21.4
23.2
35.1
14.0
21.5
14.2
14.4
22.2
11.2
13.1
13.2
11.4
21.0
40.0
47.4
42.9
42.0
50.6
35.0
38.0
24.1
22.6
23.6
11.1
22.5
22.3
40.5
40.7
28.6
49.9
HN
O
HN
O
HN
O
HN
O
32.6
95.5
128.6
42.4
49.5
42.0
49.9
34.4
22.3
23.3
20.9
21.6
36.8
23.4
42.5
29.9 30.7
31.5
32.3
20.8
30.5
22.5
37.9
20.1
30.3
147.6
127.6
24.7
25.4
179.4
175.5
171.9
169.4
179.4
165.0
164.7
171.9
40.1
18.9