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Conditions of the synthesis of trimethylsilyl-substituted cyclic peroxides (1,2-dioxanes) 479a–d and 480a,b.
 | ||||
| Endoperoxide | Equivalents of TMSOTf (or SnCl4) | Reaction time, min | Product/ratio of diastereomers | Total yield, % |
| 478a | 0.033 | 15 | 479a/480a, 1:0 | 54 |
| 478a | 1.0 SnCl4 | 30 | 479a/480a, 1:1 | 53 |
| 478b | 1.1 | 15 | 479b/480b, 1:0.8 | 60 |
| 478c | 1.1 | 40 | 479c, 1:0 | 10 |
| 478d | 1.1 | 40 | 479d, 1:0 | 48 |
