Journal Article10.1002/anie.202209326
Dramatically Enhanced Reactivity of Fullerenes and Tetrazine towards Inverse Electron Demand Diels-Alder Reaction inside a Porous Porphyrinic Cage.
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TL;DR: In this paper , a tetrazine-based axle was installed inside a porous Zn-porphyrinic cage (Zn-PB) to facilitate the encapsulation of fullerenes.
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Abstract: Inverse electron demand Diels-Alder reaction (IEDDA) between fullerenes and 1,2,4,5-tetrazine generally requires harsh conditions and long reaction times due to their strong electron-accepting nature. Herein, we report a dramatic enhancement in the reactivity of the fullerenes (C60/C70)-tetrazine reaction inside a porous Zn-porphyrinic cage (Zn-PB) under sustainable conditions by installing a tetrazine-based axle (LA) via metal-ligand coordination bond, which modulates the cavity size to facilitate the encapsulation of fullerenes. Upon encapsulation, the close proximity of fullerenes and the tetrazine group of LA dramatically increase their reactivity towards the IEDDA reaction to form fullerene-tetrazine adducts. Furthermore, the C60-tetrazine adduct is rearranged upon hydration to a bent-shaped C60-pyrazoline adduct that can be released from the Zn-PB cavity in the presence of excess LA, thus catalyzing the formation of C60-pyrazoline adduct inside Zn-PB without product inhibition.
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Citations
Recent advances in supramolecular fullerene chemistry.
Xingmao Chang,Youzhi Xu,Max von Delius +2 more
TL;DR: It is described how macrocycles and cages that bind strongly to C60 can be used to block undesired addition patterns and thus allow the selective preparation of single-isomer addition products.
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Picking the lock of coordination cage catalysis
Tomasz K. Piskorz,Vicente Martí Centelles,Rebecca L. Spicer,Fernanda Duarte,Paul J. Lusby +4 more
TL;DR: Coordination cages are highly proficient catalysts that can mimic enzyme active sites. They have the potential to become the gold-standard in non-covalent catalysis.
Molecular Co-Catalyst Confined within a Metallacage for Enhanced Photocatalytic CO2 Reduction.
Dongdong Liu,Huirong Ma,Chao Zhu,Fengyi Qiu,Weibin Yu,Li‐Li Ma,Xian-Wen Wei,Ying-Feng Han,Guozan Yuan +8 more
TL;DR: The confinement of a molecular co-catalyst within a metallacage enhances its photocatalytic CO2 reduction activity and selectivity.
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Structural Switching of a Distorted Trigonal Metal-Organic Cage to a Tetragonal Cage and Singlet Oxygen Mediated Oxidations.
TL;DR: In this paper , the synthesis of a distorted trigonal cage from a twisted tetratopic ligand (L) and a Pd(II) acceptor was reported. And the cage exhibited a complete structural reorganization of its building units in presence of C70 and C60 to form guest-encapsulated tetragonal cages.
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