N
X
C
Hal
O
N
S
P Si
Natural
Products
Solvents
C
C
C
C C
C
235
5.11 Carbonyl Compounds
235
5.11.6 Miscellaneous Carbonyl Derivatives
Carboxylic Acid Halides (δ in ppm, J in Hz)
Carboxylic Acid Anhydrides (δ in ppm)
Carboxylic Acid Imides (δ in ppm, J in Hz)
NH
O
O
N
O
O
2.70
3.56
1.17
N
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Cl
H
H
H
O
F
H
H
H
O
Cl
O
Br
O
I
O
Cl
O
Br
2.66
2.22
3.01
2.77
6.73
6.72
3.58
1.19
8.9
8.5
7.05
8.04
7.93
2.33
1.70
1.00 2.43
8.13
7.49
7.64
1.69
6.25
6.16
6.14
6.35
6.60
6.63
8.11
7.49
7.69
2.82
3.00
2.93
3.03
1.22
1.24
O
Cl
a
a
b
c
c
b
d
e
3 J ab 10.6
3 J ac 17.4
2 J bc 0.2
3 J ab 8.0
4 J ac 1.2
5 J ad 0.6
4 J ae 2.0
3 J bc 7.5
4 J bd 1.4
O
O
O
O
O
O
O
O
O
NH
O
O
(in DMSO)