BF3-catalyzed oxa-Diels–Alder reaction of ethyl vinyl sulfide and β-methyl-α-phenylacrolein: a molecular electron density theory study

2021 ◽  
Author(s):  
Mousa Soleymani ◽  
Mahdieh Chegeni ◽  
Elnaz Mohammadi
Keyword(s):  
Electron Density ◽  
Alder Reaction ◽  
Diels Alder ◽  
Ethyl Vinyl ◽  
Vinyl Sulfide ◽  
Diels Alder Reaction ◽  
Molecular Electron ◽  
Molecular Electron Density Theory

On the Catalytic Effects of the Thiazolium Salt in the Oxa-Diel-Alder Reaction between Benzaldehyde and Danishefsky’s Diene: A Molecular Electron Density Theory Study

2021 ◽  
Author(s):  
Mar Ríos-Gutiérrez ◽  
Patricia Perez ◽  
Luis R. Domingo ◽  
Jorge Soto-Delgado
Keyword(s):  
Ionic Liquid ◽  
Electron Density ◽  
Alder Reaction ◽  
Diels Alder ◽  
Molecular Electron ◽  
Molecular Electron Density Theory ◽  
Danishefsky's Diene ◽  
Catalytic Effects

The oxa-Diels-Alder (ODA) reaction of benzaldehyde with the Danishefsky diene in the presence of [thiazolium][Cl] salt, as a model of an ionic liquid, has been studied within Molecular Electron Density...

A molecular electron density theory study of the enhanced reactivity of aza aromatic compounds participating in Diels–Alder reactions

2020 ◽  
Vol 18 (2) ◽  
pp. 292-304 ◽  
Author(s):  
Luis R. Domingo ◽  
Mar Ríos-Gutiérrez ◽  
Patricia Pérez
Keyword(s):  
Electron Density ◽  
Aromatic Compounds ◽  
Activation Energies ◽  
Diels Alder ◽  
Aromatic Character ◽  
Molecular Electron ◽  
Molecular Electron Density Theory

The change of C–H by N: in these aromatic compounds decreases the ring electron density (RED), thus decreasing the activation energies of the aza Diels–Alder reactions mainly by the loss of the aromatic character of the reagents.

Lanthanide catalysts for the hetero Diels–Alder reaction: effect of ligand structure and acidity

1997 ◽  
Vol 75 (8) ◽  
pp. 1047-1054 ◽  
Author(s):  
Claude Spino ◽  
Laurel L. Clouston ◽  
David J. Berg
Keyword(s):  
Catalytic Activity ◽  
Vinyl Ether ◽  
Alder Reaction ◽  
Diels Alder ◽  
Ethyl Vinyl Ether ◽  
Ethyl Vinyl ◽  
Catalytic Activities ◽  
Ligand Structure ◽  
Bite Angle ◽  
Diels Alder Reaction

A series of yttrium, ytterbium, and lanthanum hexa-or heptacoordinate complexes were prepared and their catalytic activities tested in the hetero Diels–Alder reaction between crotonaldehyde and ethyl vinyl ether. It was found that a pKa below 7 of the ligand was necessary but not sufficient for catalytic activity. It was determined that the ligand should possess a perfluoromethyl-β-diketonate functionality. Other factors such as bite angle and hinging motion may also play a determining role. Keywords: lanthanide, catalyst, hetero Dielsis–Alder, yttrium, ytterbium, lanthanum.

Diels–Alder reaction of fused pyran-2-ones with ethyl vinyl ether

2012 ◽  
Vol 143 (5) ◽  
pp. 771-777 ◽  
Author(s):  
Amadej Juranovič ◽  
Krištof Kranjc ◽  
Slovenko Polanc ◽  
Franc Perdih ◽  
Marijan Kočevar
Keyword(s):  
Vinyl Ether ◽  
Alder Reaction ◽  
Diels Alder ◽  
Ethyl Vinyl Ether ◽  
Ethyl Vinyl ◽  
Diels Alder Reaction
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