Total Synthesis of (−)‐Arborisidine

Wang, Fengyuan; Jiao, Lei

doi:10.1002/ange.202101161

Cited by 5 publications

(1 citation statement)

References 49 publications

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“…Water splitting is currently accepted as one of the efficient ways for hydrogen production and energy storage, [1–4] and the oxidation reaction on the anode of electrolyzer, i. e., oxygen evolution reaction (OER), had already been proved as the bottleneck of whole reaction in view of theoretical research results and scale production barriers, due to its four‐electron reaction mechanism and the relatively higher overpotential compared with the hydrogen evolution reaction (HER) on the cathode [5–7] . Therefore, the rational design and feasible fabrication of anodic electrocatalyst for OER is the focus of research and development from the perspective of either fundamental understanding or practical application [2,8–11] .…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Conditioning of Metallurgically Prepared NiFe₃ Binary Alloy for Facile Oxygen Evolution Reaction

Lü

Liu

et al. 2023

ChemCatChem

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Low-cost fabrication and compositional manipulation of electrocatalyst are extremely vital to practical application. In this work, an OER electrode substrate composed solely of NiFe 3 binary alloy was metallurgically prepared and was subjected to the electrochemical conditionings including the initial Fe-leaching in a simple KSCN solution to attain the optimum Ni/Fe ratio, the subsequent LSV polarization to activate the OER-enhancing species and the final CP-aging in 1 M KOH solution to stabilize the electrocatalyst. The electrode substrate after being Feleached is OER-inactive, whereas the spinel type nickel ferrite NiFe 2 O 4 , which can be generated by LSV polarization, is considered as the "pre-catalyst". The "real-time catalysts" are actually the Fe-doped nickel (oxy)hydroxides (Ni x Fe (1À x) OOH), which can be compositionally modulated by in-situ CP-aging to accomplish the further enhancement of OER properties. Being binder-free, self-supporting and substrate-rejuvenating, the asprepared OER electrode needs an overpotential of only 266 mV to achieve the current density of 10 mA/cm 2 , and its advantages over all other conventionally prepared counterparts make it more suitable for facile oxygen evolution reaction.

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Section: Introductionmentioning

confidence: 99%

Electrochemical Conditioning of Metallurgically Prepared NiFe₃ Binary Alloy for Facile Oxygen Evolution Reaction

Lü

Liu

et al. 2023

ChemCatChem

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Divergent Synthesis of Skeletally Distinct Arboridinine and Arborisidine

Wang,

Pang,

et al. 2021

Angewandte Chemie

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A divergent synthesis of skeletally distinct arboridinine and arborisidine was achieved. The central divergent strategy was inspired by the divergent biosynthetic cyclization mode of arboridinine and arborisidine and their hidden topological connection. The branch point was reached through a Michael and Mannich cascade process. A site‐selective intramolecular Mannich reaction was developed to construct the tetracyclic core of arboridinine, while a site‐selective intramolecular α‐amination of ketone was used to access the tetracyclic core of arborisidine. A strategic Peterson olefination through intramolecular nucleophile delivery was able to set up the exocyclic olefin of arboridinine.

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Manganese‐Catalyzed Asymmetric Hydrogenation of 3H‐Indoles

Liu

Wang

et al. 2022

Angewandte Chemie

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The asymmetric hydrogenation (AH) of 3H‐indoles represents an ideal approach to the synthesis of useful chiral indoline scaffolds. However, very few catalytic systems based on precious metals have been developed to realize this challenging reaction. Herein, we report a Mn‐catalyzed AH of 3H‐indoles with excellent yields and enantioselectivities. The kinetic resolution of racemic 3H‐indoles by AH was also achieved with high s‐factors to construct quaternary stereocenters. Many acid‐sensitive functional groups, which cannot be tolerated when using a state‐of‐the‐art ruthenium catalyst, were compatible with manganese catalysis. This new process expands the scope of this transformation and highlights the uniqueness of earth‐abundant metal catalysis. The reaction could proceed with catalyst loadings at the parts per million (ppm) level with an exceptional turnover number of 72 350. This is the highest value yet reported for an earth‐abundant metal‐catalyzed AH reaction.

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Total Synthesis of (−)‐Arborisidine

Cited by 5 publications

References 49 publications

Electrochemical Conditioning of Metallurgically Prepared NiFe₃ Binary Alloy for Facile Oxygen Evolution Reaction

Electrochemical Conditioning of Metallurgically Prepared NiFe₃ Binary Alloy for Facile Oxygen Evolution Reaction

Divergent Synthesis of Skeletally Distinct Arboridinine and Arborisidine

Manganese‐Catalyzed Asymmetric Hydrogenation of 3H‐Indoles

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Total Synthesis of (−)‐Arborisidine

Cited by 5 publications

References 49 publications

Electrochemical Conditioning of Metallurgically Prepared NiFe3 Binary Alloy for Facile Oxygen Evolution Reaction

Electrochemical Conditioning of Metallurgically Prepared NiFe3 Binary Alloy for Facile Oxygen Evolution Reaction

Divergent Synthesis of Skeletally Distinct Arboridinine and Arborisidine

Manganese‐Catalyzed Asymmetric Hydrogenation of 3H‐Indoles

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Electrochemical Conditioning of Metallurgically Prepared NiFe₃ Binary Alloy for Facile Oxygen Evolution Reaction

Electrochemical Conditioning of Metallurgically Prepared NiFe₃ Binary Alloy for Facile Oxygen Evolution Reaction