Nanoparticles and single atoms of cobalt synergistically enabled low-temperature reductive amination of carbonyl compounds

Zheng, Bingxiao; Xu, Jizheng; Song, Jinliang; Wu, Haihong; Mei, Xuelei; Zhang, Kaili; Han, Wanying; Wu, Wei; He, Mingyuan; Han, Buxing

doi:10.1039/d2sc01596j

Cited by 29 publications

(12 citation statements)

References 49 publications

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“…0.2 eV) of binding energies corresponding to the Pd peaks confirmed electron interactions involving Pd and Co in Pd 0.43 Co 1 /m-NC. In addition, the Co 2p 3/2 and 2p 1/2 peaks of Pd 0.43 Co 1 /m-NC shifted to lower binding energies (780.9 eV and 796.8 eV) relative to the Co 2p 3/2 and 2p 1/2 peaks of Co 1 /m-NC (781.2 eV and 797.1 eV), 55 as shown in Fig. 3d.…”

Section: Resultsmentioning

confidence: 67%

Ultrafine PdCo bimetallic nanoclusters confined in N-doped porous carbon for the efficient semi-hydrogenation of alkynes

Zhan

Zhu

et al. 2022

Dalton Trans.

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Section: Resultsmentioning

confidence: 67%

Ultrafine PdCo bimetallic nanoclusters confined in N-doped porous carbon for the efficient semi-hydrogenation of alkynes

Zhan

Zhu

et al. 2022

Dalton Trans.

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“…The type of metals in the reductive amination is mainly focused on Co (e.g., MOF-derived Co nanoparticles, supported Co nanoparticles on nitrogen-doped carbon materials , ), Ni (e.g., Ni@C supported on γ-Al 2 O 3 , supported Ni nanoparticles , ), and Ru (e.g., supported Ru nanoparticles on metallic oxide, ,, specially shaped Ru nanoparticles, Ru single-atom catalysts (SACs)) catalysts (Figure ). Generally, these metals can afford excellent selectivity to primary amines and handle various reductive aminations of aldehydes/ketones.…”

Section: Overall Catalyst Design Principlementioning

confidence: 99%

Paving the Way for Reductive Amination: Boosting Catalytic Ammonolysis of Schiff Base

Jia,

Chen,

Jing

et al. 2023

ACS Catal.

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The synthesis of primary amines through reductive/ hydrogen-borrowing amination has garnered significant attention due to their wide application in the chemical industry. The key challenge of the reaction arises from two competing balances: the hydrogenations of primary imine versus Schiff base and the ammonolysis versus hydrogenation of Schiff base. The former has received extensive attention, and the latter, which directly determines the selectivity of primary amine, has recently emerged as a fresh view for enhancing catalytic performance. Thus, gaining insights into promoting the ammonolysis of Schiff base in the latter is becoming increasingly urgent for catalyst design. This Perspective starts by presenting the overall catalyst design principles and mainly discusses the influence of two balances on the selectivity and effective approaches to tackle them. A profound emphasis is placed on advancing the ammonolysis of Schiff bases through an in-depth understanding of structure−activity relationships and reaction mechanisms. Finally, three key directions deserving future investigations are provided. This distinctive view not only enhances the importance of comprehension of structure− activity relationships in primary amine synthesis but also unveils efficient avenues for catalyst design.

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“…53,54 Recently, several cobalt-based SACs were developed for hydrogenation/dehydrogenation related chemistry, which showed excellent catalytic activities in diverse range of organic transformations. [55][56][57][58][59] Considering the importance and challenges associated with nonpolar bond transfer hydrogenation and utilization of methanol and ethanol as hydrogen source, herein employing Co-SAC catalyst, transfer hydrogenation of azo compounds to amines using ethanol and methanol is disclosed (Scheme 1).…”

Section: Introductionmentioning

confidence: 99%

In-depth experimental and theoretical investigations on Co-SAC catalyzed transfer hydrogenation of azo compounds using methanol and ethanol

Panja

Mahapatra

Dey

et al. 2023

Preprint

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Transfer hydrogenation of non-polar bond using methanol or ethanol such hydrogen source is of great challenge, and development of efficient catalyst for performing such challenging reactions always an exciting area to explore. Herein, using Co-SAC various azo bonds were very efficiently hydrogenated to the corresponding amines, including commercially used dyes. A number of kinetics study and Hammett studies were to investigate the plausible mechanism and electronic effects. Further, a detailed DFT-calculation was performed to get a deeper insight about the mechanism.

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Nanoparticles and single atoms of cobalt synergistically enabled low-temperature reductive amination of carbonyl compounds

Abstract: Low-temperature and selective reductive amination of carbonyl compounds is a highly promising approach to access primary amines. However, it remains a great challenge to conduct this attractive route efficiently over...

Cited by 29 publications

References 49 publications

Ultrafine PdCo bimetallic nanoclusters confined in N-doped porous carbon for the efficient semi-hydrogenation of alkynes

Ultrafine PdCo bimetallic nanoclusters confined in N-doped porous carbon for the efficient semi-hydrogenation of alkynes

Paving the Way for Reductive Amination: Boosting Catalytic Ammonolysis of Schiff Base

In-depth experimental and theoretical investigations on Co-SAC catalyzed transfer hydrogenation of azo compounds using methanol and ethanol

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