Selectivity-tunable amine aerobic oxidation catalysed by metal-free N,O-doped carbons

2019 ◽  
Vol 55 (81) ◽  
pp. 12251-12254 ◽  
Author(s):  
Yingguang Li ◽  
Sensen Shang ◽  
Lianyue Wang ◽  
Ying Lv ◽  
Jingyang Niu ◽  
...  
Keyword(s):  
Catalytic System ◽  
Primary Amine ◽  
Aerobic Oxidation ◽  
Metal Free ◽  
Amine Oxidation

The first metal-free N,O-doped mesoporous carbo-catalytic system successfully switches between imine and nitrile products for primary amine oxidation.

Metal- and radical-free aerobic oxidation of heteroaromatic methanes: an efficient synthesis of heteroaromatic aldehydes

2019 ◽  
Vol 17 (17) ◽  
pp. 4220-4224 ◽  
Author(s):  
Rongzi Ye ◽  
Yuanjie Cao ◽  
Xiaoxiang Xi ◽  
Long Liu ◽  
Tieqiao Chen
Keyword(s):  
Catalytic System ◽  
Aerobic Oxidation ◽  
Methyl Groups ◽  
Efficient Synthesis ◽  
Metal Free ◽  
System P

A metal-free and radical-free synthesis of heteroaromatic aldehydes was developed through aerobic oxidation of methyl groups in an I2/DMSO/O2 catalytic system.

Regio-, Stereo- and Enantioselective α-Addition of Carbonyl Nucleo-philes to Allenamides Catalyzed by a Synergistic Copper/Enamine System

2020 ◽  
Author(s):  
Rémi Blieck ◽  
Sebastien Lemouzy ◽  
Marc Taillefer ◽  
Florian Monnier
Keyword(s):  
Catalytic System ◽  
Secondary Amine ◽  
Primary Amine ◽  
Synergistic Catalysis ◽  
Enantioselective Addition ◽  
Amine Catalysts

A dual copper/enamine catalytic system is found to enable an intermolecular enantioselective α-addition of various carbonyl nucleophiles to allenamides. Secondary amine catalysts allowed the highly enantioselective addition of aldehydes, while using primary amine catalysts led to the enantioselective addition of ketoester nucleophiles. The process was found to be highly regio-, stereo- and enantio-selective and represented the first allene hydrofunctionalization using an synergistic catalysis involving copper

Metal-free visible-light-induced aerobic oxidation of α-diazoesters leading to α-ketoesters in air

2021 ◽  
Author(s):  
Ruisheng Liu ◽  
Qishun Liu ◽  
Haoran Meng ◽  
Hongyu Ding ◽  
Jindong Hao ◽  
...  
Keyword(s):  
Visible Light ◽  
Room Temperature ◽  
Aerobic Oxidation ◽  
Metal Free

A metal-free and visible-light-induced strategy has been established for the construction of α-ketoesters via aerobic oxidation of α-diazoesters with dioxygen in air at room temperature.

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