N
X
C
O
N
S
Hal
Solvents
Natural
Products
P Si
C
C
C C
C
C
190
5 1 H NMR
R
1 H- 1 H Coupling Constants in Selected Monosubstituted Benzenes (|J| in Hz)
Substituent R
J 23
J 24
J 25
J 26
J 34
J 35
–CH 3
7.7
1.3
0.6
2.0
7.5
1.5
–CH=CH 2
7.8
1.1
0.6
1.9
7.4
1.5
–C– – – CH
7.8
1.3
0.6
1.7
7.6
1.3
–phenyl
7.8
1.2
0.6
2.0
7.5
1.4
–F
8.4
1.1
0.4
2.7
7.5
1.8
–Cl
8.1
1.1
0.5
2.3
7.5
1.7
–Br
8.0
1.1
0.5
2.2
7.4
1.8
–I
7.9
1.1
0.5
1.9
7.5
1.8
–OH
8.2
1.1
0.5
2.7
7.4
1.7
–OCH 3
8.3
1.0
0.4
2.7
7.4
1.8
–O–phenyl
8.3
1.1
0.5
2.6
7.4
1.7
–OCOCH 3
8.2
1.1
0.5
2.5
7.5
1.7
–NH 2
8.0
1.1
0.5
2.5
7.4
1.6
–NHCOCH 3
8.2
1.2
0.5
2.4
7.4
1.5
–NO 2
8.4
1.2
0.5
2.4
7.5
1.5
–C– – – N
7.8
1.3
0.7
1.8
7.7
1.3
–SH
7.9
1.2
0.6
2.1
7.5
1.5
–S(O) 2 OCH 3
8.0
1.2
0.6
2.0
7.6
1.4
–CHO
7.7
1.3
0.6
1.8
7.5
1.3
–COCH 3
8.0
1.3
0.6
1.8
7.5
1.3
–COOH
7.9
1.3
0.6
1.9
7.4
1.4
-COOCH 3
7.9
1.4
0.6
1.8
7.5
1.3
–CONH 2
7.9
1.2
0.6
2.0
7.5
1.3
–COCl
8.0
1.2
0.6
2.0
7.5
1.4
–Li
6.7
1.5
0.8
0.7
7.4
1.3
–MgBr
6.9
1.5
0.7
0.7
7.4
1.4
–P(phenyl) 2
7.6
1.2
0.6
1.7
7.4
1.4
–PO(OCH 3 ) 2
7.7
1.4
0.6
1.6
7.6
1.4
–Zn–phenyl
6.6
2.1
0.7
0.8
7.4
1.5
–Hg–phenyl
7.5
1.4
0.6
1.1
7.5
1.5
C
X
O
N
S
O
||
C
M
1
2
6
3
5
4