scholarly journals A metal-free aerobic oxidative bromination of anilines and aryl ketones with 2-methylpyridinium nitrate as a reusable ionic liquid

2019 ◽  
Vol 44 (5-6) ◽  
pp. 267-270
Author(s):  
Ming-Fang Li ◽  
Jian Wang ◽  
Yong-Xin Ke ◽  
Song-Cheng Pan ◽  
Hong Yin ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Molecular Oxygen ◽  
Catalytic System ◽  
Hydrobromic Acid ◽  
Atom Economy ◽  
Good Efficiency ◽  
Metal Free ◽  
Aryl Ketones ◽  
Oxidative Bromination

An aerobic oxidative bromination of anilines and aryl ketones catalyzed by recyclable 2-methylpyridinium nitrate ionic liquid is achieved in water using hydrobromic acid as the bromine source and molecular oxygen as the oxidant. The catalytic system shows good efficiency and atom economy.

A Metal-Free and Ionic Liquid-Catalyzed Aerobic Oxidative Bromination in Water

2015 ◽  
Vol 68 (3) ◽  
pp. 513 ◽  
Author(s):  
Jian Wang ◽  
Shu-Bin Chen ◽  
Shu-Guang Wang ◽  
Jing-Hua Li
Keyword(s):  
Ionic Liquid ◽  
Aromatic Compounds ◽  
Hydrobromic Acid ◽  
Bromine Atom ◽  
Catalytic Amount ◽  
Atom Economy ◽  
First Report ◽  
Metal Free ◽  
Oxidative Bromination

A metal-free aerobic oxidative bromination of aromatic compounds in water has been developed. Hydrobromic acid is used as a bromine source and 2-methylpyridinium nitrate ionic liquid is used as a recyclable catalyst. Water is used as the reaction mediate. This is the first report of aerobic oxidative bromination using only catalytic amount of metal-free catalyst. This system shows not only high bromine atom economy, but also high bromination selectivity. The possible mechanism and the role of the catalyst in this system have also been discussed.

Metal-Free Domino Oligocyclization Reactions of Enynals and Enynones with Molecular Oxygen

2021 ◽  
Vol 23 (4) ◽  
pp. 1291-1295
Author(s):  
Alireza Abbasi Kejani ◽  
Hormoz Khosravi ◽  
Frank Rominger ◽  
Saeed Balalaie ◽  
Bernhard Breit
Keyword(s):  
Molecular Oxygen ◽  
Metal Free

Direct synthesis of indazole derivatives via Rh(iii)-catalyzed C–H activation of phthalazinones and allenes

2021 ◽  
Vol 19 (35) ◽  
pp. 7701-7705
Author(s):  
Chuanliu Yin ◽  
Tianshuo Zhong ◽  
Xiangyun Zheng ◽  
Lianghao Li ◽  
Jian Zhou ◽  
...  
Keyword(s):  
Catalytic System ◽  
Functional Group ◽  
Direct Synthesis ◽  
Atom Economy

An Rh(iii)-catalyzed annulation of phthalazinones and various allenes was developed, leading to the formation of indazole derivatives. This catalytic system exhibits excellent functional group tolerance and atom economy.

Visible-Light-Mediated Organoboron-Catalysed Metal-Free Dehydrogenation of N-Heterocycles Using Molecular Oxygen

2021 ◽  
Author(s):  
Lanfeng Wei ◽  
Yu Wei ◽  
Jinli Zhang ◽  
Liang Xu
Keyword(s):  
Visible Light ◽  
Molecular Oxygen ◽  
The Other ◽  
Metal Free ◽  
Other Hand

The surge of photocatalytic transformation not only provides unprecedented synthetical methods, but also triggers the enthusiasm for more sustainable photocatalysts. On the other hand, oxygen is an ideal oxidant in...

Sign in / Sign up

Export Citation Format

Share Document