Visible-Light Induction/Brønsted Acid Catalysis in Relay for the Enantioselective Synthesis of Tetrahydroquinolines

2019 ◽  
Vol 21 (11) ◽  
pp. 4173-4176 ◽  
Author(s):  
Wenhui Xiong ◽  
Shan Li ◽  
Bo Fu ◽  
Jinping Wang ◽  
Qiu-An Wang ◽  
...  
Keyword(s):  
Visible Light ◽  
Acid Catalysis ◽  
Enantioselective Synthesis ◽  
Light Induction ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Brönsted Acid ◽  
Bronsted Acid Catalysis

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.

An uncommon use of irradiated flavins: Brønsted acid catalysis

2020 ◽  
Vol 56 (42) ◽  
pp. 5661-5664
Author(s):  
Yukihiro Arakawa ◽  
Tomohiro Mihara ◽  
Hiroki Fujii ◽  
Keiji Minagawa ◽  
Yasushi Imada
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Acid Catalysis ◽  
Light Irradiation ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Mild Conditions ◽  
Brönsted Acid ◽  
Bronsted Acid Catalysis

Visible light irradiation to flavins in the presence of thiols and O2 provides Brønsted acidic species that can be used as efficient catalysts for thioacetalizations and for Mannich-type reactions under non-irradiation and mild conditions.

Enantioselective synthesis of 1-aminoindene derivatives via asymmetric Brønsted acid catalysis

2021 ◽  
Author(s):  
Xiang Wu ◽  
Du Ding ◽  
Ying Zhang ◽  
Hua-Jie Jiang ◽  
Tao Wang ◽  
...  
Keyword(s):  
Acid Catalysis ◽  
Enantioselective Synthesis ◽  
Cyclization Reaction ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Brönsted Acid ◽  
Iminium Ion ◽  
Catalytic Asymmetric ◽  
Bronsted Acid Catalysis

We describe a catalytic asymmetric iminium ion cyclization reaction of simple 2-alkenylbenzaldimines using a BINOL-derived chiral N-triflyl phosphoramide. The corresponding 1-aminoindenes and tetracyclic 1-aminoindanes are formed in good yields and...

scholarly journals Enantioselective Synthesis of α‐Aryl‐β2‐Amino‐esters via Cooperative Isothiourea and Brønsted Acid Catalysis

2021 ◽  
Author(s):  
Andrew David Smith ◽  
Feng Zhao ◽  
Chang Shu ◽  
Claire M. Young ◽  
Cameron Carpenter-Warren ◽  
...  
Keyword(s):  
Acid Catalysis ◽  
Enantioselective Synthesis ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Amino Esters ◽  
Brönsted Acid ◽  
Bronsted Acid Catalysis

Inhibition by Water during Heterogeneous Brønsted Acid Catalysis by Three-Dimensional Crystalline Organic Salts

2021 ◽  
Author(s):  
Alexander Gak ◽  
Svetlana Kuznetsova ◽  
Yulia Nelyubina ◽  
Alexander A. Korlyukov ◽  
Han Li ◽  
...  
Keyword(s):  
Acid Catalysis ◽  
Three Dimensional ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Organic Salts ◽  
Brönsted Acid ◽  
Bronsted Acid Catalysis
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