Asymmetric Transfer Hydrogenation of β,γ-Alkynyl α-Imino Esters by a Brønsted Acid

2008 ◽  
Vol 10 (10) ◽  
pp. 2031-2034 ◽  
Author(s):  
Qiang Kang ◽  
Zhuo-An Zhao ◽  
Shu-Li You
Keyword(s):  
Transfer Hydrogenation ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Asymmetric Transfer Hydrogenation ◽  
Brönsted Acid ◽  
Imino Esters

Chemo- and Enantioselective Brønsted Acid-Catalyzed Reduction of α-Imino Esters with Catecholborane

2013 ◽  
Vol 355 (10) ◽  
pp. 1937-1942 ◽  
Author(s):  
Dieter Enders ◽  
Andreas Rembiak ◽  
Bianca Anne Stöckel
Keyword(s):  
Bronsted Acid ◽  
Brønsted Acid ◽  
Brönsted Acid ◽  
Acid Catalyzed ◽  
Imino Esters

P-Chiral, N-phosphoryl sulfonamide Brønsted acids with an intramolecular hydrogen bond interaction that modulates organocatalysis

2019 ◽  
Vol 17 (38) ◽  
pp. 8690-8694 ◽  
Author(s):  
Minglei Yuan ◽  
Ifenna I. Mbaezue ◽  
Zhi Zhou ◽  
Filip Topic ◽  
Youla S. Tsantrizos
Keyword(s):  
Hydrogen Bond ◽  
Intramolecular Hydrogen Bond ◽  
Transfer Hydrogenation ◽  
Bronsted Acids ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Hydrogen Bond Interaction ◽  
Bond Interaction ◽  
Brönsted Acid ◽  
Intramolecular Hydrogen

An intramolecular H-bond in the Brønsted acid OttoPhosa I accelerates the reaction and increases enantioselectivity for the transfer hydrogenation of quinolines.

Enantioselective Brønsted Acid Catalyzed Transfer Hydrogenation:  Organocatalytic Reduction of Imines

2005 ◽  
Vol 7 (17) ◽  
pp. 3781-3783 ◽  
Author(s):  
Magnus Rueping ◽  
Erli Sugiono ◽  
Cengiz Azap ◽  
Thomas Theissmann ◽  
Michael Bolte
Keyword(s):  
Transfer Hydrogenation ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Brönsted Acid ◽  
Acid Catalyzed

scholarly journals Ternary complexes of chiral disulfonimides in transfer-hydrogenation of imines: the relevance of late intermediates in ion pair catalysis

2021 ◽  
Author(s):  
Matej Žabka ◽  
Ruth M. Gschwind
Keyword(s):  
Acid Catalysis ◽  
Computational Study ◽  
Ion Pairing ◽  
Ion Pair ◽  
Ternary Complexes ◽  
Transfer Hydrogenation ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Brönsted Acid ◽  
Bronsted Acid Catalysis

In ion pairing catalysis, the structures of advanced intermediates are often not accessible. Here, we present a combined experimental and computational study of ternary complexes in Brønsted acid catalysis, which show unexpected H-bond switching.

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