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| ||
|---|---|---|
| Vinyl sulfones | Method-A | Method-B |
|
R = H: 92% | R = H: 73% |
| R = Br: 79% | R = Br: 69% | |
| R = NO2: 94% | R = NO2: 43% | |
|
R = Me: 87% | R = Me: 79% |
| R = Cl: 85% | R = Cl: 71% | |
| R = OMe: 77% | R = OMe: 80% | |
|
73% | 61% |
|
79% | 24% |
