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Turning on Catalysis: Construction of Triphenylphosphine Moieties into Porous Frameworks
Author(s) -
Chen Fang,
Wang Sai,
Sun Qi,
Xiao FengShou
Publication year - 2020
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.202000467
Subject(s) - triphenylphosphine , catalysis , reactivity (psychology) , aryl , combinatorial chemistry , chemistry , heterogeneous catalysis , organometallic chemistry , polymer , decomposition , coupling reaction , porosity , polymer chemistry , materials science , organic chemistry , medicine , alkyl , alternative medicine , pathology
In this work, we present an effective strategy to enhance the reactivity and durability of molecular organometallic catalysts by constructing into porous frameworks, as demonstrated by triphenylphosphine (PPh 3 ). Such PPh 3 moieties accessible via the porous structures could be partially metalated by Pd species to generate a highly efficient and recyclable heterogeneous catalyst for the Suzuki coupling of aryl chlorides. Site isolation in the rigid framework stabilizes the catalytically active monophosphine‐ligated complex against deactivation into less active assemblies of bisphosphine‐Pd. Meanwhile, the densely populated free ligands inhibit the decomposition of catalytically active sites thereby highlighting the beneficial effects of such a platform. Thus, the tunability of porous polymer synthesis gives great promise to impart numerous organometallic catalysts constituted by readily available ligands with unique reactivity, which are not trivially achievable with traditional systems.