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Competition Experiments Between Amides with Different Electronic Properties
 | |||||
|---|---|---|---|---|---|
| Entry | X | Y | R | ratio of X:Ya | IR stretch of RCO cm-1 |
| 1 | -OMe | -NO2 | -NEt2 | 1:1 | 1622 |
| 2 | -OEt | -OMe | -NEt2 | 1:1.1 | 1625 |
| 3 | -OEt | -OMe |  |
22:1 | 1635 |
| 4 | -OEt | -OMe |  |
19:1 | 1683 |
determined by 1H NMR spectroscopy - average of two runs
