lab
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.
|
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 |
|
|
|