AbstractGiven that heterogeneous palladium‐catalyzed C−C bond formation reactions under continuous‐flow conditions are well suited for the efficient and safe production of pharmaceuticals and functional materials, the development of active and durable catalysts for this purpose is a matter of high practical significance. Here, a previously established molecular convolution methodology was used to synthesize catalysts for Suzuki‐Miyaura coupling under flow conditions by blending convoluted polymeric palladium catalysts (prepared from copolymers of 4‐vinylpyridine and 4‐tert‐butylstyrene) and crosslinked polymeric auxiliary materials (prepared from copolymers of divinylbenzene and 4‐tert‐butylstyrene). The optimal catalyst exhibited high performance and durability and allowed numerous biaryl products such as liquid‐crystalline materials, organic electroluminescent materials, and pharmaceuticals to be continuously synthesized with turnover frequencies of up to 238 h−1. In a demonstration of practical utility, the developed catalytic system was used for the continuous synthesis of two pharmaceuticals (felbinac and fenbufen) in water as the sole solvent.
摘要鉴于连续流动条件下的异相钯催化 C-C 键形成反应非常适合于高效安全地生产药物和功能材料,为此开发活性持久的催化剂具有重要的现实意义。在此,我们采用之前建立的分子卷积方法,通过混合卷积聚合钯催化剂(由 4-乙烯基吡啶和 4-叔丁基苯乙烯的共聚物制备)和交联聚合辅助材料(由二乙烯基苯和 4-叔丁基苯乙烯的共聚物制备),合成了流动条件下的 Suzukii-Miyaura 偶联催化剂。最佳催化剂表现出高性能和耐久性,可连续合成多种生物芳基产品,如液晶材料、有机电致发光材料和药物,合成频率高达 238 h-1。在一次实用性演示中,所开发的催化系统被用于以水为唯一溶剂连续合成两种药物(非比萘酸和芬布芬)。