This work shows that hydroboration can be efficiently applied to the postsynthetic modification (PSM) of the Sonogashira-Hagihara coupling-based microporous organic polymers (MOPs). Hollow MOPs (H-MOPs) were prepared by template synthesis through the Sonogashira–Hagihara coupling of tetra(4-ethynylphenyl)methane with 1,4-diiodobenzene. The H-MOPs were used as platforms in the PSM-based functionalization. The heat-treatment of H-MOPs in the presence of a neat pinacolborane reagent resulted in the successful addition of pinacolborane groups to the internal alkynes of H-MOPs, generating H-MOPs with pinacolboranes (H-MOP-BPs). The pinacolborane moieties in the H-MOP-BP were further converted to boronic acid groups. The resultant H-MOP-BAs were used as heterogeneous organocatalysts in the CO₂ fixation with epoxides to cyclic carbonates at ambient temperature (50 °C). Moreover, H-MOP-BAs could be recycled with retention of the catalytic performance in five successive reactions.

中文翻译：

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中空微孔有机聚合物的硼氢化：一种有前途的功能材料合成后改性方法

这项工作表明，硼氢化可以有效地应用于基于 Sonogashira-Hagihara 偶联的微孔有机聚合物 (MOP) 的合成后修饰 (PSM)。通过四（4-乙炔基苯基）甲烷与 1,4-二碘苯的 Sonogashira-Hagihara 偶联，通过模板合成制备空心 MOP（H-MOP）。H-MOP 被用作基于 PSM 的功能化的平台。在纯频哪醇硼烷试剂存在下对 H-MOPs 进行热处理，成功地将频哪醇硼烷基团添加到 H-MOPs 的内部炔烃中，从而生成具有频哪醇硼烷的 H-MOPs (H-MOP-BPs)。H-MOP-BP 中的频哪醇硼烷部分进一步转化为硼酸基团。所得 H-MOP-BAs 用作 CO _{2中的多相有机催化剂}在环境温度（50°C）下用环氧化物固定成环状碳酸酯。此外，H-MOP-BAs 可以在五个连续反应中保持催化性能循环使用。