vcl_6-2.docx

1. Write the IUPAC names for the following four structures:

a. 3- ethoxy-1-butene

b. 1- ethoxy-2-butene

2. Predict the NMR spectra for each of these two compounds by listing, in the NMR tables below, the

chemical shift, the splitting, and the number of hydrogens associated with each predicted peak. Sort

the peaks from largest chemical shift to lowest.

1H NMR

Structure:

Peak

Chemical Shift(δ)

Multiplicity†

H‡

Peak

Chemical Shift(δ)

Multiplicity†

H‡

1

7

2

8

3

9

4

10

5

11

6

12

1H NMR

Structure:

Peak

Chemical Shift(δ)

Multiplicity†

H‡

Peak

Chemical Shift(δ)

Multiplicity†

H‡

1

7

2

8

3

9

4

10

5

11

6

12

† Specify the multiplicity as a singlet (s), doublet (d), triplet (t), quartet (q), or multiplet (m).

‡ Specify the number of hydrogens associated with each peak.

In the NMR tables below, list the chemical shift, the splitting, and the number of hydrogens associated with each peak for each compound. Compare your answers to your predictions.

1H NMR

Structure:

Peak

Chemical Shift(δ)

Multiplicity†

H‡

Peak

Chemical Shift(δ)

Multiplicity†

H‡

1

7

2

8

3

9

4

10

5

11

6

12

1H NMR

Structure:

Peak

Chemical Shift(δ)

Multiplicity†

H‡

Peak

Chemical Shift(δ)

Multiplicity†

H‡

1

7

2

8

3

9

4

10

5

11

6

12