N
X
C
O
N
S
Hal
Solvents
Natural
Products
P Si
C
C
C C
C
C
180
5 1 H NMR
1 H Chemical Shifts and Coupling Constants of Enols (δ in ppm,
J in Hz)
5.2.2 Conjugated Dienes
1 H Chemical Shifts and Coupling Constants (δ in ppm, J in Hz)
H
H
H
H
H
CH 3
H
H
H
H
CH 3
H
H
H
H
H
H
H
O
O
H
H
H
H
O
O
H
H
CH 3
H
3 J ab 9.7
3 J bc ≈8
3 J ab 5.1
≈16
≈16
8.40
2.11
7.90
5.04
5.06
4.86
5.03
5.16
4.98 5.98
6.27
6.21
6.59 1.72
5.45
5.92
5.11
5.61
1.71
5.60
≈9.3
a
c
a
a
a
b
b
b
c
c
c
d
d
d
e
e
e
f
f
f
a
b
b
3 J ab 10.2
3 J ac 17.1
3 J ad 10.4
4 J ae -0.9
4 J af -0.8
2 J bc 1.8
5 J be 1.3
5 J bf 0.6
5 J cf 0.7
3 J ab 10.2
3 J ac 16.9
3 J ad 10.3
5 J ae 0.4
4 J af -0.8
2 J bc 1.9
4 J bd -0.8
6 J be -0.7
5 J bf 0.7
4 J cd -0.8
6 J ce -0.7
5 J cf 0.7
4 J de -1.6
3 J df 15.1
3 J ef 6.6
3 J ab 10.2
3 J ac 16.9
3 J ad 10.9
4 J ae -1.1
5 J af 0.2
2 J bc 2.1
4 J bd -0.8
5 J be -0.7
6 J bf 0.7
4 J cd -0.8
5 J ce 0.7
6 J cf -0.6
3 J de 10.8
4 J df -1.8
3 J ef 7.0