scholarly journals Highly efficient Ir-catalyzed asymmetric hydrogenation of benzoxazinones and derivatives with a Brønsted acid cocatalyst

2019 ◽  
Vol 10 (15) ◽  
pp. 4328-4333 ◽  
Author(s):  
Zhengyu Han ◽  
Gang Liu ◽  
Rui Wang ◽  
Xiu-Qin Dong ◽  
Xumu Zhang
Keyword(s):  
Asymmetric Hydrogenation ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Highly Efficient ◽  
Brönsted Acid

The Ir-catalyzed highly efficient asymmetric hydrogenation of benzoxazinones and derivatives was successfully developed with N-methylated ZhaoPhos L5 as the ligand, affording various chiral dihydrobenzoxazinones and derivatives with excellent results.

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.

Highly Efficient Direct Allylation of Oxindoles with Simple Allylic Alcohols Enabled by Palladium/Brønsted Acid Catalysis

Synlett ◽  
2014 ◽  
Vol 25 (15) ◽  
pp. 2149-2254 ◽  
Author(s):  
Gaoxi Jiang ◽  
Huameng Yang ◽  
Hui Zhou ◽  
Hongyu Yin ◽  
Chungu Xia
Keyword(s):  
Acid Catalysis ◽  
Allylic Alcohols ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Highly Efficient ◽  
Brönsted Acid ◽  
Bronsted Acid Catalysis

Reversible chemoselective transetherification of vinylogous esters using Fe-catalyst under additive free conditions

2019 ◽  
Vol 17 (12) ◽  
pp. 3258-3266 ◽  
Author(s):  
Nenavath Parvathalu ◽  
Sandip G. Agalave ◽  
Nirmala Mohanta ◽  
Boopathy Gnanaprakasam
Keyword(s):  
Bronsted Acid ◽  
Brønsted Acid ◽  
Acid Base ◽  
Highly Efficient ◽  
Fe Catalyst ◽  
Brönsted Acid ◽  
Vinylogous Esters

An additive/Brønsted acid/base free, highly efficient and chemoselective transetherification of vinylogous esters and water mediated de-alkylation using Fe-catalyst is described.

Strong Brønsted Acid as a Highly Efficient Promoter for Group Transfer Polymerization of Methyl Methacrylate

2009 ◽  
Vol 42 (22) ◽  
pp. 8747-8750 ◽  
Author(s):  
Ryohei Kakuchi ◽  
Kaori Chiba ◽  
Keita Fuchise ◽  
Ryosuke Sakai ◽  
Toshifumi Satoh ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Group Transfer ◽  
Highly Efficient ◽  
Brönsted Acid

Highly Efficient Brønsted Acid-Catalyzed Cycloisomerizations of Alkynes Bearing Bis(acetoxy) Groups to Indenyl Ketones

2008 ◽  
Vol 350 (6) ◽  
pp. 797-801 ◽  
Author(s):  
Yuanhong Liu ◽  
Shaolin Zhou ◽  
Guijie Li ◽  
Bin Yan ◽  
Shenghai Guo ◽  
...  
Keyword(s):  
Bronsted Acid ◽  
Brønsted Acid ◽  
Highly Efficient ◽  
Brönsted Acid ◽  
Acid Catalyzed
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