21598-08-3Relevant articles and documents
CO2-Folded Single-Chain Nanoparticles as Recyclable, Improved Carboxylase Mimics
Chen, Liang,Yan, Qiang,Zeng, Rongjin
supporting information, p. 18418 - 18422 (2020/08/21)
Emulating the function of natural carboxylases to convert CO2 under atmospheric condition is a great challenge. Herein we report a class of CO2-folded single-chain nanoparticles (SCNPs) that can function as recyclable, function-intensified carboxylase mimics. Lewis pair polymers containing bulky Lewis acidic and basic groups as the precursor, can bind CO2 to drive an intramolecular folding into SCNPs, in which CO2 as the folded nodes can form gas-bridged bonds. Such bridging linkages highly activate CO2, which endows the SCNPs with extraordinary catalytic ability that can not only catalyze CO2-insertion of C(sp3)-H for imitating the natural enzyme's function, it can also act on non-natural carboxylation pathways for C(sp2 and sp)-H substrates. The nanocatalysts are of highly catalytic efficiency and recyclability, and can work at room temperature and near ambient CO2 condition, inspiring a new approach to sustainable C1 utilization.
Direct C-H carboxylation with carbon dioxide using 1,2,3-triazol-5-ylidene copper(I) complexes
Inomata, Hiroshi,Ogata, Kenichi,Fukuzawa, Shin-Ichi,Hou, Zhaomin
supporting information; experimental part, p. 3986 - 3989 (2012/09/10)
1,2,3-Triazol-5-ylidene copper(I) complexes (tzNHC-Cu) efficiently catalyzed the direct C-H carboxylation of benzoxazole and benzothiazole derivatives with CO2 to give the corresponding esters in excellent yields after treatment with alkyl iodi
Carboxylation of N-H/C-H bonds using n-heterocyclic carbene copper(I) complexes
Boogaerts, Ine I. F.,Fortman, George C.,Furst, Marc R. L.,Cazin, Catherine S. J.,Nolan, Steven P.
supporting information; scheme or table, p. 8674 - 8677 (2011/01/06)
Greenhouse gas makes good: A simple copper-mediated protocol has been developed where N-H or C-H bonds can be directly functionalized using an easily prepared catalyst. The novel [1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene] copper(I) hydroxide, [Cu(IPr)(OH)], permits the facile activation and carboxylation of N-H and C-H bonds with pKavalues of less than 27.7 (see scheme).
