Synthetic methods and reactions. 188. Triflic acid catalyzed phenylamination of aromatics with phenyl azide

1993 ◽  
Vol 58 (24) ◽  
pp. 6900-6901 ◽  
Author(s):  
George A. Olah ◽  
Pichika Ramaiah ◽  
Qi Wang ◽  
G. K. Surya Prakash
Keyword(s):  
Synthetic Methods ◽  
Triflic Acid ◽  
Phenyl Azide ◽  
Acid Catalyzed

Triflic Acid Catalyzed Synthesis of Spirocycles via Acetylene Cations

2009 ◽  
Vol 48 (32) ◽  
pp. 5893-5896 ◽  
Author(s):  
Tienan Jin ◽  
Masafumi Himuro ◽  
Yoshinori Yamamoto
Keyword(s):  
Triflic Acid ◽  
Acid Catalyzed

scholarly journals Recent Advances in Synthesis of 4-Arylcoumarins

Molecules ◽  
2018 ◽  
Vol 23 (10) ◽  
pp. 2417 ◽  
Author(s):  
Jong-Wha Jung ◽  
Nam-Jung Kim ◽  
Hwayoung Yun ◽  
Young Han
Keyword(s):  
Biological Activities ◽  
Synthetic Methods ◽  
Metal Catalysis ◽  
Naturally Occurring ◽  
Recent Advances ◽  
Formation Type ◽  
Privileged Scaffold ◽  
Acid Catalyzed ◽  
A Minor ◽  
Synthetic Approaches

4-Arylcoumarins (4-aryl-2H-1-benzopyran-2-one), also known as neoflavones, comprise a minor subclass of naturally occurring flavonoids. Because of their broad-spectrum biological activities, arylcoumarins have been attracting the attention of the organic and medicinal chemistry communities, and are considered as an important privileged scaffold. Since the development of Pechmann condensation, a classical acid-catalyzed condensation between phenol and β-keto-carboxylic acid, several versatile and efficient synthetic approaches for 4-arylcoumarins have been reported. This review summarizes recent advances in the synthesis of the 4-arylcoumarin scaffold by classifying them based on the final bond-formation type. In particular, synthetic methods executed under mild and highly efficient conditions, such as solvent-free reactions and transition metal catalysis, are highlighted.

scholarly journals Facile triflic acid-catalyzed α-1,2-cis-thio glycosylations: scope and application to the synthesis of S-linked oligosaccharides, glycolipids, sublancin glycopeptides, and TN/TF antigens

2019 ◽  
Vol 10 (45) ◽  
pp. 10475-10480 ◽  
Author(s):  
Sanyong Zhu ◽  
Ganesh Samala ◽  
Eric T. Sletten ◽  
Jennifer L. Stockdill ◽  
Hien M. Nguyen
Keyword(s):  
Chemical Stability ◽  
Triflic Acid ◽  
Acid Catalyzed

Studies of S-linked glycoconjugates have attracted growing interest because of their enhanced chemical stability and enzymatic resistance over O-glycoside counterparts.

Triflic acid-catalyzed cascade cyclization of arenyl enynes via acetylene-cation cyclization and Friedel–Crafts type reaction

2011 ◽  
Vol 52 (17) ◽  
pp. 2069-2071 ◽  
Author(s):  
Tienan Jin ◽  
Junichi Uchiyama ◽  
Masafumi Himuro ◽  
Yoshinori Yamamoto
Keyword(s):  
Triflic Acid ◽  
Type Reaction ◽  
Cascade Cyclization ◽  
Acid Catalyzed
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