Cooperative Catalytic Alkyne Hydrosilylation by a Porphyrinic Metal–Organic Framework Composite
作者:Chunying Chen、Qijie Mo、Yufei Wang、Li Zhang
DOI:10.1021/acs.inorgchem.3c02479
日期:2023.10.16
valuable building blocks and important structural units in organic chemistry. Herein, catalytic alkyne hydrosilylation was reported to be promoted by a porphyrin metal–organic framework with the incorporation of Pd nanoparticles (Pd@Ir-PCN-222). Catalytic results showed that Pd@Ir-PCN-222 displayed high catalytic efficiency, giving rise to the E isomer vinylsilane with an excellent turnover frequency
乙烯基硅烷是有机化学中有价值的构建单元和重要结构单元。据报道,结合 Pd 纳米颗粒 (Pd@Ir-PCN-222) 的卟啉金属有机框架可促进催化炔烃氢化硅烷化。催化结果表明Pd@Ir-PCN-222表现出高催化效率,产生E异构体乙烯基硅烷,其周转频率(TOF)高达2564 h –1。机理研究表明,催化活性的增强源于铱卟啉与Pd纳米颗粒在有限空间内的协同作用。铱卟啉很容易在Ir-PCN-222的内腔中吸附和缩合氢硅烷和炔烃,不仅加速反应,而且促进Pd纳米粒子激活氢硅烷和炔烃的Si-H和C≡C键, 分别。