Table 1.
Entry | Starting material | Additive | Yield, % |
1 | (OBz)3 RP (5) | No additive | No reaction |
2 | (OBz)3 RP (5) | MgCl2 | Trace |
3 | (OBz)3 RPP (9) | No additive | No reaction |
4 | (OBz)3 RPP (9) | MgCl2 | 50 |
Compound 5 or 9 (1 equiv, 0.05 M) and MgCl2 (2 equiv, 0.1 M) for entry 2 and 4.