H-NMR for molecule 18

Assignment

Shifts

Integration

Splitting Pattern

J-Values

a

6.75

1H

D

8.2 Hz

b

6.58

1H

D

8.2 Hz

c

5.42-5.34 Minor Rotomer

2H

0.60 Broad

 

cc

5.29-5.21 Major Rotomer

2H

0.60 Broad

 

d

4.90

1H

S

 

e

4.16-4.06 Major Rotomer

1H

D

13.8 Hz

e

4.02-3.92 Minor Rotomer

1H

D

13.8 Hz

f

3.87

3H

S

 

g

3.74

3H

S

 

h

3.20-2.70

2H

M

 

i

2.64

1H

D

 

j

2.35-2.04

3H

M

 

k

1.95-1.75

3H

M