How would you use 1 H NMR spectroscopy to distinguish between the following comp

Question

How would you use 1H NMR spectroscopy to distinguish between the following compounds?

A)

I=3 & II=2 signals

B)

I=4 & II=3 signals

C)

I=5 & II=3 signals

D)

none of these

Which of the following structures is consistent with this 1H NMR spectrum?

A)

I

B)

II

C)

III

D)

IV

E)

none of these

How many signals would you expect to find in the 13C NMR spectrum of the following compound?

A)

2

B)

3

C)

4

D)

5

E)

none of these

Which of the following compounds is consistent with the 13C NMR spectrum shown below?

A)

I

B)

II

C)

III

D)

IV

E)

none of these

How would you use 1H NMR spectroscopy to distinguish between the following compounds?

A)

I=3 & II=2 signals

B)

I=4 & II=3 signals

C)

I=5 & II=3 signals

D)

none of these

Explanation / Answer

1. 4 and 3 signals respectively (B)

2.II (B)

3. 4 signal (C)

4. IV compound (D)

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