Conformational Preferences of Allene Ketones in Lewis Base Catalysis: Synthesis of 4H‐Pyrans and 3,4‐Dihydro‐2H‐pyrans viaα‐Regioselective [4+2] Annulation of γ‐Substituted Allene Ketones and Activated Alkenes

2021 ◽  
Author(s):  
Rongrong Hou ◽  
Ziyu Wang ◽  
Jia Peng ◽  
Ye Yuan ◽  
Jingli Zhang ◽  
...  
Keyword(s):  
Lewis Base ◽  
Base Catalysis ◽  
Conformational Preferences

scholarly journals Dual metal and Lewis base catalysis approach for asymmetric synthesis of dihydroquinolines and the α-arylation of aldehydes via N-acyliminium ions

2015 ◽  
Vol 51 (87) ◽  
pp. 15788-15791 ◽  
Author(s):  
Chandra M. R. Volla ◽  
Eleonora Fava ◽  
Iuliana Atodiresei ◽  
Magnus Rueping
Keyword(s):  
Asymmetric Synthesis ◽  
Catalytic System ◽  
Optically Active ◽  
Lewis Base ◽  
Base Catalysis ◽  
Asymmetric Addition ◽  
Acyliminium Ions ◽  
Indium Triflate ◽  
Dual Metal

A dual catalytic system consisting of indium triflate and a chiral imidazolidinone catalyzes the asymmetric addition of aldehydes to N-acyl quinoliniums furnishing optically active dihydroquinolines in good yields and excellent selectivities.

ChemInform Abstract: A New Motif for Lewis Base Catalysis: Asymmetric Reduction of β-Enamino Esters

ChemInform ◽  
2012 ◽  
Vol 43 (11) ◽  
pp. no-no
Author(s):  
Andreas Weickgennat ◽  
Martin Oestreich
Keyword(s):  
Asymmetric Reduction ◽  
Lewis Base ◽  
Base Catalysis

ChemInform Abstract: Lewis Base Assisted Broensted Base Catalysis: Direct Regioselective Asymmetric Vinylogous Alkylation of Allylic Sulfones.

ChemInform ◽  
2011 ◽  
Vol 42 (52) ◽  
pp. no-no
Author(s):  
Lin Jiang ◽  
Qian Lei ◽  
Xin Huang ◽  
Hai-Lei Cui ◽  
Xue Zhou ◽  
...  
Keyword(s):  
Lewis Base ◽  
Base Catalysis

scholarly journals Multifunctional heterocyclic scaffolds for hybrid Lewis acid/Lewis base catalysis of carbon–carbon bond formation

Tetrahedron ◽  
2016 ◽  
Vol 72 (27-28) ◽  
pp. 3905-3916 ◽  
Author(s):  
Dennis Wiedenhoeft ◽  
Adam R. Benoit ◽  
Yibiao Wu ◽  
Jacob D. Porter ◽  
Elisia Meyle ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Bond Formation ◽  
Lewis Base ◽  
Base Catalysis ◽  
Carbon Bond ◽  
Carbon Carbon Bond
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