scholarly journals Chiral Brønsted acid-catalyzed Friedel–Crafts alkylation of electron-rich arenes with in situ-generated ortho-quinone methides: highly enantioselective synthesis of diarylindolylmethanes and triarylmethanes

2015 ◽  
Vol 51 (8) ◽  
pp. 1461-1464 ◽  
Author(s):  
Satyajit Saha ◽  
Santosh Kumar Alamsetti ◽  
Christoph Schneider
Keyword(s):  
Enantioselective Synthesis ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Quinone Methides ◽  
Reaction Conditions ◽  
Brönsted Acid ◽  
Acid Catalyzed ◽  
Chiral Bronsted Acid ◽  
Hydrogen Bonded

Hydrogen-bonded, in situ-generated ortho-quinone methides undergo highly enantioselective Friedel–Crafts reactions with indoles and naphthols under mild reaction conditions.

Chiral Brønsted acid-catalysed enantioselective synthesis of isoindolinone-derived N(acyl),S-acetals

2016 ◽  
Vol 52 (10) ◽  
pp. 2071-2074 ◽  
Author(s):  
Josipa Suć ◽  
Irena Dokli ◽  
Matija Gredičak
Keyword(s):  
Enantioselective Synthesis ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Brönsted Acid ◽  
Acid Catalyzed ◽  
Chiral Bronsted Acid ◽  
High Yields

Chiral Brønsted acid catalyzed synthesis of N(acyl),S-acetals from in situ generated ketimines proceeds in high yields and enantioselectivities.

scholarly journals Asymmetric Brønsted acid-catalyzed aza-Diels–Alder reaction of cyclic C-acylimines with cyclopentadiene

2012 ◽  
Vol 8 ◽  
pp. 1819-1824 ◽  
Author(s):  
Magnus Rueping ◽  
Sadiya Raja
Keyword(s):  
Alder Reaction ◽  
Optically Active ◽  
Diels Alder ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Reaction Conditions ◽  
Diels Alder Reaction ◽  
Brönsted Acid ◽  
Acid Catalyzed ◽  
Chiral Bronsted Acid

A new chiral Brønsted acid-catalyzed aza-Diels–Alder reaction of cyclic C-acylimines with cyclopentadiene has been developed. The reaction provides optically active aza-tetracycles in good yields with high diastereo- and enantioselectivities under mild reaction conditions.

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