A Polyphenylene Support for Pd Catalysts with Exceptional Catalytic Activity

Wang, Feng; Mielby, Jerrik Jørgen; Richter, Felix H.; Wang, Guanghui; Prieto, Gonzalo; Kasama, Takeshi; Weidenthaler, Claudia; Bongard, Hans‐Josef; Kegnæs, Søren; Fürstner, Alois; Schüth, Ferdi

doi:10.1002/anie.201404912

Cited by 77 publications

(71 citation statements)

References 39 publications

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“…44 They described a solid polyphenylene synthesized from palladium-catalyzed Suzuki-Miyaura coupling reaction of 1,2,4,5-tetrabromobenzene and benzene-1,4-diboronic acid. 44 They described a solid polyphenylene synthesized from palladium-catalyzed Suzuki-Miyaura coupling reaction of 1,2,4,5-tetrabromobenzene and benzene-1,4-diboronic acid.…”

Section: Chiral Organometallic Groupsmentioning

confidence: 99%

Porous polymer catalysts with hierarchical structures

et al. 2015

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The emergence of porous organic polymers (POPs) has provided great opportunities for new applications in heterogeneous catalysis owing to their unprecedented intrinsic structural features such as high surface areas, extraordinary framework stabilities and chemically adjustable compositions. In this tutorial review, representative recent developments in the POPs-based catalysts with hierarchically porous structures are presented. Various strategies for the syntheses of hierarchically porous polymers including hard-templating, soft-templating and template-free approaches and the design of catalytically active porous polymers including post-modification, co-polymerization and self-polymerization have been discussed. In addition, their catalytic properties are compared. Finally, we emphasize the importance of the synthesis of hierarchically porous polymer based heterogeneous catalysts using sustainable routes under template-free and metal-free conditions.

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Section: Chiral Organometallic Groupsmentioning

confidence: 99%

Porous polymer catalysts with hierarchical structures

et al. 2015

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“…In addition, certain porous polymers are ideal supports for Pd nanoparticles (NPs), which are used in heterogeneous catalysis . High surface areas, multimodal porosities and swelling features could eliminate Pd leaching, aggregation of the Pd(0)‐NPs, and deactivation of the catalysts.…”

Section: Methodsmentioning

confidence: 99%

Cyclopalladated Azo–linked Porous Polymers in C–C Bond Forming Reactions

Afewerki

Tai

et al. 2016

ChemistrySelect

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We designed a new cyclopalladated porous polymer (cyclo-Pd (II)/PP-2) with up to 20.7 wt% of Pd and investigated it as a heterogeneous catalyst for C-C bond-forming transformations. It was also shown to be an effective scavenger for Pd 2 + in solution. The palladacycles formed along the backbone of the azo-linked porous polymer (PP-2) with (Pd-N) and (Pd-C) bonds as were confirmed by a combination of spectroscopies. The cyclo-Pd(II)/PP-2 decomposed when used for Suzuki and Heck cross-coupling reactions, and acyclic-Pd/PP-2 formed with Pd nanoparticles (NPs) bound to the PP-2. The Suzuki couplings were highly efficient in water and exhibited excellent recyclability. The cyclo-Pd(II)/PP-2 was also an effective heterogeneous Lewis-acid catalyst for stereoselective carbocyclization reactions.[a] Dr.

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“…Particularly when regular mesostructures are employed as catalyst support, interpretation of microscopy results is facilitated and even quantitative descriptors for the metal nanoscale distribution can be derived [88]. In addition, the advent of aberration corrected microscopy methods has made it possible to determine the 3D location of low-atomicity metal clusters [89], or even single metal atoms confined within porous matrices [90].…”

Section: Recent Examples For the Use Of 3d Model Systems To Guide Catmentioning

confidence: 99%