scholarly journals Transition metal/Brønsted acid cooperative catalysis enabled facile synthesis of 8-hydroxyquinolines through one-pot reactions of ortho-aminophenol, aldehydes and alkynes

RSC Advances ◽  
2018 ◽  
Vol 8 (59) ◽  
pp. 33968-33971 ◽  
Author(s):  
Shuyan Yu ◽  
Jingxin Wu ◽  
Hongbing Lan ◽  
Hanwen Xu ◽  
Xiaofei Shi ◽  
...  
Keyword(s):  
Transition Metal ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Synthetic Methodology ◽  
Facile Synthesis ◽  
One Pot ◽  
Cooperative Catalysis ◽  
Brönsted Acid

An efficient and cooperative catalytic one-pot synthetic methodology for 8-hydroxyquinoline compounds has been developed.

Facile synthesis of chiral indolines through asymmetric hydrogenation of in situ generated indoles

2018 ◽  
Vol 5 (19) ◽  
pp. 2805-2809 ◽  
Author(s):  
Chang-Bin Yu ◽  
Jie Wang ◽  
Yong-Gui Zhou
Keyword(s):  
Asymmetric Hydrogenation ◽  
Hydrogenation Process ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Facile Synthesis ◽  
One Pot ◽  
Brönsted Acid ◽  
Palladium Catalyzed ◽  
Intramolecular Condensation

A concise synthesis of chiral indolines has been developed through intramolecular condensation, deprotection and palladium-catalyzed asymmetric hydrogenation in a one-pot process with up to 96% ee. A strong Brønsted acid played an important role in both the formation of indoles and asymmetric hydrogenation process.

Facile synthesis of N-aryl phenothiazines and phenoxazines via Brønsted acid catalyzed C−H amination of arenes

2022 ◽  
Author(s):  
Wang Xia ◽  
Zi-An Zhou ◽  
Jie Lv ◽  
Shao-Hua Xiang ◽  
Yong-Bin Wang ◽  
...  
Keyword(s):  
Transition Metal ◽  
Cross Coupling ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Facile Synthesis ◽  
Synthetic Strategy ◽  
Brönsted Acid ◽  
Acid Catalyzed ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

N-aryl phenothiazines and phenoxazines are of significant importance in various disciplines throughout academia and industry. Conventional synthetic strategy for the construction of these structures centers on transition-metal-catalyzed cross-coupling of aryl...

Tuning acid-base cooperativity to create bifunctional fiber catalysts for one-pot tandem reactions in water

2021 ◽  
Author(s):  
Xian-Lei Shi ◽  
Lijuan Jiang ◽  
Benyu Sun ◽  
Shuangshuang Liu ◽  
Mengmeng Du ◽  
...  
Keyword(s):  
Tandem Reactions ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Acid Base ◽  
One Pot ◽  
Cooperative Catalysis ◽  
Brönsted Acid ◽  
Base Functions

Herein, we described a simple and straightforward route to create bifunctional fiber catalysts for one-pot cooperative catalysis. The materials were combined with amine base functions and Bronsted acid functions on...

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 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

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).

scholarly journals Brønsted acid-catalyzed metal-free one-pot synthesis of benzimidazoles via [4+1] heteroannulation of ortho-phenylenediamines with β-oxodithioesters

ARKIVOC ◽  
2017 ◽  
Vol 2018 (2) ◽  
pp. 81-89
Author(s):  
Abhijeet Srivastava ◽  
Gaurav Shukla ◽  
Dhananjay Yadav ◽  
Maya Shankar Singh
Keyword(s):  
Bronsted Acid ◽  
Brønsted Acid ◽  
One Pot ◽  
Metal Free ◽  
One Pot Synthesis ◽  
Brönsted Acid ◽  
Acid Catalyzed
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