Comp | 7a | 7b | 7c | 7d | 7e | 7f |
X | C=O | N-Me | N-Boc | N-Et | O | S |
Yield | 50% | 75% | 70% | 78% | 68% | 70% |
Reaction Time | 12 h | 8 h | 9 h | 8 h | 10 h | 10 h |