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Start Over Author "Liang-Nian He" Journal chemical communications
5 results on '"Liang-Nian He"'

1. Palladium-catalyzed carboxylative cyclization of propargylic amines with aryl iodides, CO2 and CO under ambient pressure

Author

Shuai-Fang Cai, Li-Qi Qiu, Wen-Bin Huang, Hong-Ru Li, and Liang-Nian He

Subjects
Materials Chemistry, Metals and Alloys, Ceramics and Composites, General Chemistry, Catalysis, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials
Abstract

The palladium-catalyzed four-component carboxylative cyclization of propargylic amines, aryl iodides, CO2 and CO was developed, which has broad substrate scope and application prospects.

Published
2022

2. Visible light-driven carbamoyloxylation of the α-C(sp3)–H bond of arylacetones via radical-initiated hydrogen atom transfer

Author

Xing He, Xiangyang Yao, Shuai-Fang Cai, Hong-Ru Li, and Liang-Nian He

Subjects
Materials Chemistry, Metals and Alloys, Ceramics and Composites, General Chemistry, Catalysis, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials
Abstract

The O-β-oxoalkyl carbamates were synthesized via the visible light-initiated HAT pathway from CO2, amines and inactive substrates with the assistance of CBr4, leading to simultaneous construction of C–O and C–N bonds under ambient conditions.

Published
2022

3. Cluster-based MOFs with accelerated chemical conversion of CO2 through C–C bond formation

Author

Jie Dong, Bin Zhao, Gang Xiong, Bing Yu, Liang-Nian He, and Ying Shi

Subjects
010405 organic chemistry, Chemistry, Metals and Alloys, General Chemistry, Bond formation, 010402 general chemistry, 01 natural sciences, Catalysis, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Solvent, Carboxylation, Chemical products, Chemical conversion, Materials Chemistry, Ceramics and Composites, Cluster (physics), Organic chemistry, Cluster based
Abstract

Investigations on metal-organic frameworks (MOFs) as direct catalysts have been well documented, but direct catalysis of the chemical conversion of terminal alkynes and CO2 as chemical feedstock by MOFs into valuable chemical products has never been reported. We report here two cluster-based MOFs I and II assembled from a multinuclear Gd-cluster and Cu-cluster, displaying high thermal and solvent stabilities. I and II as heterogeneous catalysts possess active catalytic centers [Cu12I12] and [Cu3I2], respectively, exhibiting excellent catalytic performance in the carboxylation reactions of CO2 with 14 kinds of terminal alkynes under 1 atm and mild conditions. For the first time catalysis of the carboxylation reaction of terminal alkynes with CO2 by MOF materials without any cocatalyst/additive is reported. This work not only reduces greenhouse gas emission but also provides highly valuable materials, opening a wide space in seeking recoverable catalysts to accelerate the chemical conversion of CO2.

Published
2017

4. Cu(<scp>ii</scp>)-catalyzed esterification reaction via aerobic oxidative cleavage of C(CO)–C(alkyl) bonds

Author

Qing-Wen Song, An-Hua Liu, Ran Ma, and Liang-Nian He

Subjects
chemistry.chemical_classification, Nucleophilic addition, 010405 organic chemistry, Chemistry, Metals and Alloys, General Chemistry, Oxidative phosphorylation, 010402 general chemistry, 01 natural sciences, Medicinal chemistry, Catalysis, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, chemistry.chemical_compound, Functional group, Carbon dioxide, Materials Chemistry, Ceramics and Composites, Organic chemistry, Oxidative cleavage, Bond cleavage, Alkyl
Abstract

A novel Cu(II)-catalyzed aerobic oxidative esterification of simple ketones for the synthesis of esters has been developed with wide functional group tolerance. This process is assumed to go through a tandem sequence consisting of α-oxygenation/esterification/nucleophilic addition/C-C bond cleavage and carbon dioxide is released as the only byproduct.

Published
2016

5. Synthesis of bimagnetic ionic liquid and application for selective aerobic oxidation of aromatic alcohols under mild conditions

Author

Cheng-Xia Miao, Suojiang Zhang, Liang-Nian He, Weiguo Cheng, Jian Sun, Jinquan Wang, Sébastien Chanfreau, and Bing Yu

Subjects
Inorganic chemistry, Metals and Alloys, General Chemistry, Photochemistry, Catalysis, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, chemistry.chemical_compound, Paramagnetism, chemistry, Ionic liquid, Materials Chemistry, Ceramics and Composites, Spectroscopy
Abstract

The first bimagnetic ionic liquid based on Fe and TEMPO with cooperative functionalities not only exhibited strong paramagnetic behaviour at room temperature under an applied magnetic field of 5000 Oe but also proved to be an effective catalyst for selective aerobic oxidation of aromatic alcohols under mild and clean conditions.

Published
2011

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