189245-79-2Relevant academic research and scientific papers
Ball-Milling Induced Debonding of Surface Atoms from Metal Bulk for Construing High-Performance Dual-Site Single-Atom Catalysts
Liu, Bo,Pan, Jing,Shi, Weidong,Song, Shuyan,Wang, Huilin,Wang, Xiao,Xu, Jing,Zhang, Hongjie,Zhang, Lingling,Zhao, Meng
, p. 23154 - 23158 (2021)
One of the most pressing challenges in single-atom catalysis is the manipulation of the coordination environment of central metals to maximize the catalyst performance. Herein, we fabricated a high-performance catalyst (Co-SNC) by introducing S into the n
Oxygen-free water-promoted selective photocatalytic oxidative coupling of amines
Bai, Peng,Tong, Xinli,Gao, Yiqi,Guo, Pengfei
, p. 5803 - 5811 (2019)
A novel photocatalytic selective oxidative transformation of amines to imines using water as a primary oxidant is achieved under oxygen-free conditions. In the presence a single 1%Pt?TiO2-500 catalyst, the photocatalytic oxidative coupling of benzylamine to N-benzylidenebenzylamine has been efficiently performed using water as an oxidant, in which a 99.8% conversion and a 92.5% selectivity were obtained at room temperature; meanwhile, a certain amount of hydrogen was detected that confirms the simultaneous occurrence of water splitting reaction. Further investigations revealed that the introduction of the Pt element facilitates the formation of O-holes on the surface of TiO2, which efficiently promotes the generation of active oxygen species from water and the following oxidative coupling of benzylamine. Then, the photocatalytic oxidative coupling of various aromatic and aliphatic amines with water as the primary oxidant were also studied, and excellent conversion and high selectivities to corresponding products were attained. Based on the control experiment and the catalytic principle, a possible reaction mechanism is proposed for the oxidative coupling of benzylamine with water as the primary oxidant.
Atmospherical oxidative coupling of amines by UiO-66-NH2 photocatalysis under milder reaction conditions
Liu, Ruxue,Meng, Shuangyan,Ma, Yali,Niu, Litong,He, Shuanghong,Xu, Xueqing,Su, Bitao,Lu, Dedai,Yang, Zhiwang,Lei, Ziqiang
, p. 108 - 112 (2019)
To assess the mechanism and milder conditions for amines to imines, UiO-66-NH2 was chosen as an efficient photocatalyst for the transformation under light irradiation. A series of experiments for the catching of the active species were performe
Functions of Phytic Acid in Fabricating Metal-Free Carbocatalyst for Oxidative Coupling of Benzylamines?
Zhao, Chuanchuan,Gao, Yongjun,Zhang, Ziyi,Ma, Ding
, p. 1292 - 1298 (2020)
Sustainable phytic acid and cellulose are selected as precursors to fabricate P-doped carbon material (C-P-500), which possesses the high surface area and exhibits excellent catalytic activity and stability in the oxidative coupling of benzylamines (conve
Oxidative coupling of primary amines to imines under base-free and additive-free conditions over AuNPs/SBA-NH2 nanocatalyst
Neeli, Chinna Krishna Prasad,Ganji, Saidulu,Ganjala, Venkata Siva Prasad,Kamaraju, Seetha Rama Rao,Burri, David Raju
, p. 14128 - 14135 (2014)
A 4-12 nm sized AuNPs/SBA-NH2 catalyst has been synthesized by post-synthetic functionalization of SBA-15 with propylamine followed by the deposition of Au3+ using AuCl3 as a gold precursor and the reduction of Au3+/
Functions of hydroxyapatite in fabricating N-doped carbon for excellent catalysts and supercapacitors
Chu, Minzhe,Zhai, Yingying,Shang, Ningzhao,Zhang, Xiaoyu,Wang, Chun,Zhang, Yunrui,Wang, Haijun,Gao, Yongjun
, p. 4952 - 4960 (2019)
Functions of hydroxyapatite (HAP) in fabricating nitrogen-containing carbon materials with 1,10-phenanthroline as a precursor were demonstrated. HAP can efficiently prevent 1,10-phenanthroline from subliming and promote it to graphitized carbon during the
Visible-light-induced oxidative coupling reaction of benzylic amines using iridium(III) complex of pincer type imidazo[1,5-a]pyridine ligand
Yagishita, Fumitoshi,Nagamori, Tatsuya,Shimokawa, Sota,Hoshi, Keita,Yoshida, Yasushi,Imada, Yasushi,Kawamura, Yasuhiko
, (2020)
We have designed and synthesized an iridium(III) complex of pincer type imidazo[1,5-a]pyridine ligand. The complex has a broad absorption band and shows the yellow emission in solution. When the complex was used as a photocatalyst in the visible-light-ind
Mesoporous carbon derived from Vitamin B12: A high-performance bifunctional catalyst for imine formation
Chen, Bo,Shang, Sensen,Wang, Lianyue,Zhang, Yi,Gao, Shuang
, p. 481 - 484 (2016)
Mesoporous carbon derived from natural vitamin B12 is applied for the first time in organic synthesis and exhibits exceptionally high dual activity for imine formation via the cross-coupling of alcohols with amines and the self-coupling of primary amines using molecular oxygen or air as the terminal oxidant.
Donor–Acceptor Type Conjugated Microporous Polymer as a Metal-Free Photocatalyst for Visible-Light-Driven Aerobic Oxidative Coupling of Amines
Jiang, Jun,Liu, Xiangying,Luo, Rongchang
, p. 3145 - 3153 (2021)
Abstract: Developing cheap, highly efficient, metal-free heterogeneous photocatalysts remain a great challenge in photoredox reactions. Herein, we utilize a typical Suzuki coupling of low-cost triphenylamine derivative and 9,10-dibromoanthracene to synthe
Hot-Carrier Organic Synthesis via the Near-Perfect Absorption of Light
Xiao, Qi,Connell, Timothy U.,Cadusch, Jasper J.,Roberts, Ann,Chesman, Anthony S. R.,Gómez, Daniel E.
, p. 10331 - 10339 (2018)
Photocatalysis enables the synthesis of valuable organic compounds by exploiting photons as a chemical reagent. Although light absorption is an intrinsic step, existing approaches rely on poorly absorbing catalysts that require high illumination intensities to afford enhanced efficiencies. Here, we demonstrate that a plasmonic metamaterial capable of near-perfect light absorption (94%) readily catalyzes a model organic reaction with a 29-fold enhancement in conversion relative to controls. The oxidation of benzylamine proceeds via a reactive iminium intermediate with high selectivity at ambient temperature and pressure, using only low-intensity visible irradiation. Control experiments demonstrated that only hot charge carriers produced following photoexcitation facilitate the formation of superoxide radicals, which, in turn, leads to iminium formation. Modeling shows that hot holes with energies that overlap with the highest-occupied molecular orbital (HOMO) of the reactant can participate and initiate the photocatalytic conversion. These results have important implications for hot-carrier photocatalysis and plasmon-hot-carrier extraction.
