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30.5 环加成反应
环加成反应是两种不饱和分子相互加成生成环状产物的反应。与电环化反应一样，环加成反应受反应物的轨道对称性支配。
1. A cycloaddition reaction is one in which two unsaturated mol
A cycloaddition reaction is one in which two unsaturated mol
2. For a successful cycloaddition, the terminal π lobes of the
For a successful cycloaddition, the terminal π lobes of the