Table 4.
Reductive N-O Bond Cleavage of N-Methoxy Lactams 30.
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entrya | substrate | R | n | product | yield (%)b |
1 | 30a | H | 0 | 32a | 75 |
2 | 30c | H | 1 | 32c | 88 |
3 | 30g | Me | 1 | 32g | 70 |
4 | 30h | t-Bu | 1 | 32h | 59 |
5 | 30i | Bn | 1 | 32i | 73 |
6 | 30j | Ph | 1 | 32j | 65 |
7 | 30k | OTIPS | 1 | 32k | 90 |
8 | 30l | NHBz | 1 | 32l | 77 |
9 | ![]() |
- | - | ![]() |
76 |
10 | ![]() |
- | - | ![]() |
86 |
11 | ![]() |
- | - | ![]() |
74 |
12 | ![]() |
- | - | ![]() |
73 |
Reaction conditions: Mo(CO)6 (1.2 equiv), CH3CN, H2O reflux, 24 h; air, rt, 24 h.
Isolated yield, after purification by flash chromatography.