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30.8 σ迁移重排的一些例子
因为[1,5] σ迁移重排涉及三对电子（两个 π 键和一个 σ 键），表30.3中的轨道对称性规则预测该反应为同面反应。事实上，[1,5]同面
1. Because a [1,5] sigmatropic rearrangement involves three ele
Because a [1,5] sigmatropic rearrangement involves three ele
2. Both these [1,5] hydrogen shifts occur by a symmetry-allowed
Both these [1,5] hydrogen shifts occur by a symmetry-allowed
3. Like the Diels–Alder reaction discussed in Section 14.4 and
Like the Diels–Alder reaction discussed in Section 14.4 and
4. The Cope rearrangement that converts a 1,5-diene to an isome
The Cope rearrangement that converts a 1,5-diene to an isome
5. Part 5
Part 5
6. Part 6
Part 6