Direct aromatic amination by azides: reactions of hydrazoic acid and butyl azides with aromatic compounds in the presence of both trifluoromethanesulfonic acid and trifluoroacetic acid

1993 ◽  
pp. 867 ◽  
Author(s):  
Hiroshi Takeuchi ◽  
Taki Adachi ◽  
Hideaki Nishiguchi ◽  
Katsutaka Itou ◽  
Kikuhiko Koyama
Keyword(s):  
Trifluoroacetic Acid ◽  
Aromatic Compounds ◽  
Trifluoromethanesulfonic Acid ◽  
Hydrazoic Acid

Synthesis of Novel Isoquinolino[5,4-ab]phenanthridine Derivatives via Pictet–Spengler Reaction

Synthesis ◽  
2018 ◽  
Vol 51 (06) ◽  
pp. 1377-1382
Author(s):  
Tzenge-Lien Shih ◽  
Min-Chen Tsai ◽  
Pei Huang ◽  
Liang Syu
Keyword(s):  
Phosphoric Acid ◽  
Trifluoroacetic Acid ◽  
Trifluoromethanesulfonic Acid ◽  
Acidic Media

The reaction of 5-amino-2-[2-(dimethylamino)ethyl]-6-phenyl-1H-benzo[de]isoquinoline-1,3(2H)-dione with a series of aldehydes in acidic media (phosphoric acid, trifluoromethanesulfonic acid, and trifluoroacetic acid) is described. This key step is based on the Pictet–Spengler reaction to synthesize ten novel isoquinolino[5,4-ab]phenanthridine derivatives. The most effective acid is phosphoric acid and optimized yields were obtained. The frameworks of target compounds are unique and have never been reported.

Acidity dependence of the trifluoromethanesulfonic acid catalyzed isobutane-isobutylene alkylation modified with trifluoroacetic acid or water

1996 ◽  
Vol 146 (1) ◽  
pp. 107-117 ◽  
Author(s):  
George A. Olah ◽  
Patrice Batamack ◽  
Denis Deffieux ◽  
Béla Török ◽  
Qi Wang ◽  
...  
Keyword(s):  
Trifluoroacetic Acid ◽  
Trifluoromethanesulfonic Acid ◽  
Acid Catalyzed
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