An in-depth look at the effect of Lewis acid catalysts on Diels–Alder cycloadditions in ionic liquids

Tetrahedron ◽  
2005 ◽  
Vol 61 (30) ◽  
pp. 7105-7111 ◽  
Author(s):  
Guadalupe Silvero ◽  
María José Arévalo ◽  
José Luis Bravo ◽  
Martín Ávalos ◽  
José Luis Jiménez ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Lewis Acid ◽  
Diels Alder ◽  
Acid Catalysts ◽  
Lewis Acid Catalysts

An In-Depth Look at the Effect of Lewis Acid Catalysts on Diels—Alder Cycloadditions in Ionic Liquids.

ChemInform ◽  
2005 ◽  
Vol 36 (45) ◽  
Author(s):  
Guadalupe Silvero ◽  
Maria Jose Arevalo ◽  
Jose Luis Bravo ◽  
Martin Avalos ◽  
Jose Luis Jimenez ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Lewis Acid ◽  
Diels Alder ◽  
Acid Catalysts ◽  
Lewis Acid Catalysts

Catalyzed Orientation Reversals in Diels–Alder Reactions

1975 ◽  
Vol 53 (4) ◽  
pp. 616-618 ◽  
Author(s):  
Žarko Stojanac ◽  
Robert A. Dickinson ◽  
Nada Stojanac ◽  
Ronald J. Woznow ◽  
Zdenek Valenta
Keyword(s):  
Lewis Acid ◽  
Diels Alder ◽  
Acid Catalysts ◽  
Acid Salt ◽  
Lewis Acid Catalysts ◽  
Preferential Formation ◽  
Orientation Reversal

Lewis acid catalysts cause an orientation reversal in the Diels–Alder additions of 2,6-di-methyl-1,4-quinone (1) and toluquinone (12) to 1-substituted 1,3-butadienes and to 1,2- and 1,3-dialkyl dienes. These results are explained by the preferential formation of one reactive quinone–Lewis acid salt.

scholarly journals Reaction of Glycerol with Trimethyl Orthoformate: Towards the Synthesis of New Glycerol Derivatives

Catalysts ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 534 ◽  
Author(s):  
Roberto Calmanti ◽  
Emanuele Amadio ◽  
Alvise Perosa ◽  
Maurizio Selva
Keyword(s):  
Ionic Liquids ◽  
Lewis Acid ◽  
Synthetic Approach ◽  
Acid Catalysts ◽  
Lewis Acid Catalysts ◽  
Catalyst Free ◽  
Acidic Ionic Liquids ◽  
Brønsted And Lewis Acid ◽  
Trimethyl Orthoformate

The reactivity of glycerol with trimethyl orthoformate is here described with an emphasis on developing a reliable synthetic approach for glycerol valorization. The glycerol based orthoester 4-(dimethoxymethoxy)methyl)-2-methoxy-1,3-dioxolane (3) was synthesized, under catalytic as well as catalyst-free conditions, by taking advantage of the thermodynamically controlled equilibrium between intermediates. Both Brønsted and Lewis acid catalysts accelerated the attainment of such an equilibrium, particularly Brønsted acidic ionic liquids BSMImHSO4 and BSMImBr were the most effective compounds for this reaction. The kinetic profiles allowed the proposal of a mechanism that accounts for the selectivity of the reaction.

Immobilised Ionic Liquids as Lewis Acid Catalysts for the Alkylation of Aromatic Compounds with Dodecene

2000 ◽  
Vol 196 (1) ◽  
pp. 86-94 ◽  
Author(s):  
C. DeCastro ◽  
E. Sauvage ◽  
M.H. Valkenberg ◽  
W.F. Hölderich
Keyword(s):  
Ionic Liquids ◽  
Lewis Acid ◽  
Aromatic Compounds ◽  
Acid Catalysts ◽  
Lewis Acid Catalysts

New Lewis acid catalysts for the Diels-Alder reaction

1989 ◽  
Vol 30 (11) ◽  
pp. 1357-1360 ◽  
Author(s):  
T. Ross Kelly ◽  
Sanat K. Maity ◽  
Premji Meghani ◽  
Nizal S. Chandrakumar
Keyword(s):  
Lewis Acid ◽  
Alder Reaction ◽  
Diels Alder ◽  
Acid Catalysts ◽  
Lewis Acid Catalysts ◽  
Diels Alder Reaction
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