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C-C connectivities in the dihydropyran 6
| Sequential | 1Jcc, Hz | Long-range | Bonds (n) | nJcc, Hz |
|---|---|---|---|---|
| 1, 2 | 35.2 | 3, 5 | 2 | 3.5 |
| 2, 3 | 33.8 | 3, 6 | 3 | <3 |
| 3, 4 | 53.0 | 3, 8 | 3 | <2 |
| 4, 5 | 83.8 | 4, 6 | 2 | <3 |
| 5, 6 | 40.9 | 4, 7 | 3 | 2.5 |
| 6, 7 | 32.9 | 4, 8 | 2 | <2 |
| 7, 8 | 35.8 | 4, 9 | 3 | <2 |
| 8, 9 | 40.4 | 4, 10 | 2 | 3 |
| 5, 10 | 48* | 5, 8 | 3 | 3.7 |
Couplings determined from DQ-2D correlation matrix; digital resolution 1.1 Hz/pt; bold marks long-range connectivities that can only occur in a cyclic structure.
Echo time 15 ms, digital resolution 4.4 Hz/pt.
