Relevant articles and documents
Instantaneous carbon-carbon bond formation using a microchannel reactor with a catalytic membrane
Uozumi, Yasuhiro Yamada, Yoichi M. A. Beppu, Tomohiko Fukuyama, Naoshi Ueno, Masaharu Kitamori, Takehiko
Instantaneous catalytic carbon-carbon bond forming reactions were achieved in a microchannel reactor having a polymeric palladium complex membrane. The catalytic membrane was constructed inside the microchannel via self-assembling complexation at the interface between the organic and aqueous phases flowing laminarly, where non-cross-linked polymer-bound phosphine and ammonium tetrachloropalladate dissolved, respectively. A palladium-catalyzed coupling reaction of aryl halides and arylboronic acids was performed using the microchannel reactor to give quantitative yields of biaryls within 4 s of retention time in the defined channel region. Copyright
Suzuki reactions in water catalyzed by an active and reusable PMO-type Pd(II) organometal catalyst with cage-like mesoporous structure
Zhu, Fengxia Li, Hexing
A novel Pd(II) organometal catalyst with three-dimensional (3D) cage-like Ia3d cubic mesoporous structure and high surface area was prepared. In comparison with the corresponding catalyst with two-dimensional (2D) P6mm hexagonal mesoporous structure, the as-prepared catalyst exhibited higher activities in the water-medium Suzuki coupling reactions owing to the diminished diffusion limit. It showed comparable efficiencies with the Pd(PPh 3)2Cl2 homogeneous catalyst and could be easily recycled and reused for five times without significant loss of activity.
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