scholarly journals Conjugate Addition of Indoles to α,β-Unsaturated Ketones Using a Brønsted Acid Ionic Liquid as an Efficient Catalyst

Molecules ◽  
2009 ◽  
Vol 14 (9) ◽  
pp. 3222-3228 ◽  
Author(s):  
Chuan-Ji Yu ◽  
Chen-Jiang Liu
Keyword(s):  
Ionic Liquid ◽  
Conjugate Addition ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Efficient Catalyst ◽  
Unsaturated Ketones ◽  
Brönsted Acid

CO2 absorption properties of Brønsted acid–base ionic liquid composed of N,N-dimethylformamide and bis(trifluoromethanesulfonyl)amide

2010 ◽  
Vol 52 (2) ◽  
pp. 189-192 ◽  
Author(s):  
Daisuke Kodama ◽  
Mitsuhiro Kanakubo ◽  
Masaki Kokubo ◽  
Takeshi Ono ◽  
Hajime Kawanami ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Co2 Absorption ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Acid Base ◽  
Absorption Properties ◽  
Brönsted Acid

Brønsted acid cocatalysis in photocatalytic intramolecular coupling of tertiary amines: efficient synthesis of 2-arylindols

2016 ◽  
Vol 14 (31) ◽  
pp. 7447-7450 ◽  
Author(s):  
Xiaoqian Yuan ◽  
Xinxin Wu ◽  
Shupeng Dong ◽  
Guibing Wu ◽  
Jinxing Ye
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Room Temperature ◽  
Coupling Reaction ◽  
Bronsted Acid ◽  
Tertiary Amines ◽  
Brønsted Acid ◽  
Efficient Synthesis ◽  
Unsaturated Ketones ◽  
Brönsted Acid

We report herein a highly efficient intramolecular coupling reaction of tertiary amines and ketones (α,β-unsaturated ketones) by using a Brønsted acid as a cocatalyst, affording 2-arylindols in good to excellent yields (up to 92%) under visible light irradiation at room temperature.

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