Table 5. Endo/Exo-Selectivity of Adducts in Diels–Alder Reactions Using DES 5 at Different Stoichiometric Ratios and DES 6.
| DES 5 | 4a:4b ratio | 5a:5b ratio |
|---|---|---|
| 1:2 | 8.6:1 | 3.9:1 |
| 1:1 | 4.0:1 | |
| 1:3 | 5.1:1 |
| DES 6 | 4a:4b ratio | 5a:5b ratio |
|---|---|---|
| 1:2 | 5.3:1 | 3.8:1 |
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