scholarly journals Enantioselective Bromocycloetherification by Lewis Base/Chiral Brønsted Acid Cooperative Catalysis

2011 ◽  
Vol 14 (1) ◽  
pp. 256-259 ◽  
Author(s):  
Scott E. Denmark ◽  
Matthew T. Burk
Keyword(s):  
Lewis Base ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Cooperative Catalysis ◽  
Brönsted Acid ◽  
Chiral Bronsted Acid

Cooperative Catalysis with Iron and a Chiral Brønsted Acid for Asymmetric Reductive Amination of Ketones

2014 ◽  
Vol 356 (16) ◽  
pp. 3451-3455 ◽  
Author(s):  
Shaolin Zhou ◽  
Steffen Fleischer ◽  
Haijun Jiao ◽  
Kathrin Junge ◽  
Matthias Beller
Keyword(s):  
Reductive Amination ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Cooperative Catalysis ◽  
Brönsted Acid ◽  
Chiral Bronsted Acid

Practical catalytic enantioselective synthesis of 2,3-dihydroquin-azolinones by chiral brønsted acid catalysis

2021 ◽  
Author(s):  
Yongbiao Guo ◽  
Zhenhua Gao ◽  
Junchen Li ◽  
Xiaojing Bi ◽  
Enxue Shi ◽  
...  
Keyword(s):  
Phosphoric Acid ◽  
Acid Catalysis ◽  
Enantioselective Synthesis ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Brönsted Acid ◽  
Chiral Bronsted Acid ◽  
Bronsted Acid Catalysis

An efficient, practical and scalable protocol to prepare chiral 2,3-dihydroquinazolinones was developed under catalysis of spirocyclic SPINOL-phosphoric acid.

A Tandem Isomerization/Prins Strategy: Iridium(III)/Brønsted Acid Cooperative Catalysis

2013 ◽  
Vol 125 (49) ◽  
pp. 13148-13152 ◽  
Author(s):  
Vince M. Lombardo ◽  
Christopher D. Thomas ◽  
Karl A. Scheidt
Keyword(s):  
Bronsted Acid ◽  
Brønsted Acid ◽  
Cooperative Catalysis ◽  
Brönsted Acid

Cooperative catalysis of N-heterocyclic carbene and Brønsted acid for a highly enantioselective route to unprotected spiro-indoline-pyrans

2015 ◽  
Vol 51 (39) ◽  
pp. 8330-8333 ◽  
Author(s):  
Youqiang Lin ◽  
Limin Yang ◽  
Yue Deng ◽  
Guofu Zhong
Keyword(s):  
Direct Synthesis ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Cooperative Catalysis ◽  
Brönsted Acid

A chiral cooperative catalysis of NHC and Brønsted acid for a formal [4+2] reaction of unprotected isatins and enals was developed for the direct synthesis of unprotected spiro[indoline-3,2′-pyran]-2,6′(3′H)-diones in good to excellent yields (up to 95%) with high enantioselectivities (up to >93% ee).

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