Research Article
[4+2] versus [2+2] Homodimerization in P(V) Derivatives of 2,4-Disubstituted Phospholes
Table 4
Chemical shifts (ppm) and coupling constants (Hz) of 1d, 4d, and 5d.
| | |
| | | 1H | 13C | Entry | R | Hα
|
| Cα
|
| Cβ
|
|
| 1 | 1d | 6.97 (39.0) | 7.48 (12.5) | 127.4 (0) | 153.1 (1.8) | 149.3 (7.6) | 131.5 (10.1) | 2 | 4d | 6.53 (30.5) | 7.59 (39.5) | 121.3 (86.4) | 142.9 (74.0) | 150.8 (17.3) | 132.7 (22.9) | 3 | 5d | 4.40 (21.0) | 6.58 (39.5) | 40.9 (65.4) | 150.9 (3.3) | 65.1 (5.9) | 143.5 (12.3) |
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