Herein, we report strain-driven regioselective tandem ring-opening cross-metathesis (ROCM) of a linearly fused cage system that contains both bicyclo[2.2.1]heptene and bicyclo[2.2.2]octene units fused to the same cage system. The synthesis of novel cage propellane involves Diels–Alder cycloaddition and [2+2] photocycloaddition as key steps.

中文翻译：

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含有双环[2.2.1]庚烯和双环[2.2.2]辛烯单元的混合笼式螺旋桨的应变诱导区域选择性开环交叉复分解

在这里，我们报告了线性稠合笼系统的应变驱动的区域选择性串联开环交叉复分解（ROCM），该系统包含融合到同一笼系统的双环[2.2.1]庚烯和双环[2.2.2]辛烯单元。新型笼状螺旋桨的合成涉及 Diels-Alder 环加成和 [2+2] 光环加成作为关键步骤。