ChemInform Abstract: Effect of Bronsted Acids and Bases, and Lewis Acid (Sn2+) on the Regiochemistry of the Reaction of Amines with Trifluoromethyl-β-diketones: Reaction of 3-Aminopyrrole to Selectively Produce Regioisomeric 1H-Pyrrolo[3,2-b]pyridines.

ChemInform ◽  
2016 ◽  
Vol 47 (19) ◽  
Author(s):  
Michael De Rosa ◽  
David Arnold ◽  
Douglas Hartline ◽  
Linda Truong ◽  
Roman Verner ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Bronsted Acids ◽  
Acids And Bases

Synthesis and Application of Strong Brønsted Acids Generated from the Lewis Acid Al(ORF)3 and an Alcohol

2012 ◽  
Vol 31 (21) ◽  
pp. 7485-7491 ◽  
Author(s):  
Anne Kraft ◽  
Jennifer Beck ◽  
Gunther Steinfeld ◽  
Harald Scherer ◽  
Daniel Himmel ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Bronsted Acids

scholarly journals Enantioselective Nazarov cyclization of indole enones cooperatively catalyzed by Lewis acids and chiral Brønsted acids

2017 ◽  
Vol 8 (10) ◽  
pp. 7197-7202 ◽  
Author(s):  
Guo-Peng Wang ◽  
Meng-Qing Chen ◽  
Shou-Fei Zhu ◽  
Qi-Lin Zhou
Keyword(s):  
Proton Transfer ◽  
Lewis Acid ◽  
Lewis Acids ◽  
Bronsted Acids ◽  
Bronsted Acid ◽  
Nazarov Cyclization ◽  
Cooperative Catalysis ◽  
Brönsted Acid ◽  
Chiral Bronsted Acid ◽  
Chiral Brønsted Acids

The first enantioselective Nazarov cyclization of substrates with only one coordinating site and with proton-transfer as an enantioselective-determining step was realized by means of cooperative catalysis with a Lewis acid and a chiral Brønsted acid.

Relativistic effects on acidities and basicities of Brønsted acids and bases containing gold

2013 ◽  
Vol 15 (41) ◽  
pp. 17971
Author(s):  
Ilmar A. Koppel ◽  
Peeter Burk ◽  
Kalev Kasemets ◽  
Ivar Koppel
Keyword(s):  
Relativistic Effects ◽  
Bronsted Acids ◽  
Acids And Bases

scholarly journals [1,3]/[1,4]-Sulfur atom migration in β-hydroxyalkylphosphine sulfides

2020 ◽  
Vol 16 ◽  
pp. 88-105
Author(s):  
Katarzyna Włodarczyk ◽  
Piotr Borowski ◽  
Marek Stankevič
Keyword(s):  
Dft Calculations ◽  
Lewis Acid ◽  
Sulfur Atom ◽  
Bronsted Acids ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Carbon Migration ◽  
Brönsted Acid ◽  
Atom Migration ◽  
Insight Into

β-Hydroxyalkylphosphine sulfides undergo [1,3]- or [1,4]-sulfur atom phosphorus-to-carbon migration in the presence of Lewis or Brønsted acids. The direction of sulfur atom migration depends on the type of acid used for the reaction. In the presence of a Brønsted acid, mainly [1,3]-rearrangement is observed, whereas a Lewis acid catalyzes the [1,4]-sulfur migration. To gain insight into the mechanism of these transformations, the stereochemistry of these rearrangements have been tested, along with the conduction of some control experiments and DFT calculations.

Nanostructured Protic Ionic Liquids Retain Nanoscale Features in Aqueous Solution While Precursor Brønsted Acids and Bases Exhibit Different Behavior

2011 ◽  
Vol 115 (9) ◽  
pp. 2055-2066 ◽  
Author(s):  
Tamar L. Greaves ◽  
Danielle F. Kennedy ◽  
Asoka Weerawardena ◽  
Nicholas M. K. Tse ◽  
Nigel Kirby ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Ionic Liquids ◽  
Bronsted Acids ◽  
Protic Ionic Liquids ◽  
Acids And Bases ◽  
Nanoscale Features
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