Research Article
[4+2] versus [2+2] Homodimerization in P(V) Derivatives of 2,4-Disubstituted Phospholes
Table 2
Comparison of 13C NMR chemical shifts (ppm) (CDCl3) of 3b and A.
| | | | |
| | | 3b | A |
| | Cn | δ (ppm) | (Hz) | δ (ppm) | (Hz) | | C1 | 135.5 | 91.0 | 130.4 | 103.5 | | C2 | 164.4 | 17.9; 10.3 | 154.6 | 24.2; 9.0 | | C3 | 53.1 | 15.0; 15.0 | 51.4 | 12.8; 12.8 | | C4 | 52.2 | 62.5 | 53.8 | 67.9 | | C5 | 142.5 | 8.5 | 134.6 | 11.4 | | C6 | 143.9 | 10.3; 5.5 | 122.5 | 12.2 | | C7 | 46.3 | 45.3 | 49.8 | 64.6 | | C8 | 51.7 | 68.8; 8.6 | 43.7 | 79.5; 15.0 |
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