Umpolung reactions in an ionic liquid catalyzed by electrogenerated N-heterocyclic carbenes. Synthesis of saturated esters from activated α,β-unsaturated aldehydes

2012 ◽  
Vol 48 (43) ◽  
pp. 5361 ◽  
Author(s):  
Marta Feroci ◽  
Isabella Chiarotto ◽  
Monica Orsini ◽  
Romina Pelagalli ◽  
Achille Inesi
Keyword(s):  
Ionic Liquid ◽  
Heterocyclic Carbenes ◽  
Unsaturated Aldehydes

Organocatalytic upgrading of the key biorefining building block by a catalytic ionic liquid and N-heterocyclic carbenes

2012 ◽  
Vol 14 (10) ◽  
pp. 2738 ◽  
Author(s):  
Dajiang (D. J.) Liu ◽  
Yuetao Zhang ◽  
Eugene Y.-X. Chen
Keyword(s):  
Ionic Liquid ◽  
Building Block ◽  
Heterocyclic Carbenes

scholarly journals Facile synthesis of reversibly crosslinked poly(ionic liquid)-type gels: Recyclable supports for organocatalysis by N-heterocyclic carbenes

2018 ◽  
Vol 107 ◽  
pp. 82-88 ◽  
Author(s):  
Sofiem Garmendia ◽  
Romain Lambert ◽  
Anne-Laure Wirotius ◽  
Joan Vignolle ◽  
Andrew P. Dove ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Heterocyclic Carbenes ◽  
Facile Synthesis ◽  
Liquid Type ◽  
Poly Ionic Liquid

The effect of ionic liquid in supported ionic liquid catalysts (SILCA) in the hydrogenation of α,β-unsaturated aldehydes

2007 ◽  
Vol 62 (14) ◽  
pp. 3660-3671 ◽  
Author(s):  
Pasi Virtanen ◽  
Hannu Karhu ◽  
Krisztian Kordas ◽  
Jyri-Pekka Mikkola
Keyword(s):  
Ionic Liquid ◽  
Supported Ionic Liquid ◽  
Unsaturated Aldehydes

scholarly journals Nickel and palladium complexes of enolatefunctionalised N-heterocyclic carbenes

2010 ◽  
Vol 8 (5) ◽  
pp. 992-998 ◽  
Author(s):  
Saravanakumar Shanmuganathan ◽  
Olaf Kühl ◽  
Peter Jones ◽  
Joachim Heinicke
Keyword(s):  
Crystal Structure ◽  
Ionic Liquid ◽  
Nickel Complexes ◽  
Palladium Complexes ◽  
Heterocyclic Carbenes ◽  
Ethylene Oligomerization ◽  
Pure Form ◽  
Chloride Crystal ◽  
In Situ Techniques

AbstractThe reaction of chloroethyltrimethylsilylether with 1-methylimidazole furnishes an ionic liquid that undergoes methanolysis to crystalline 2-hydroxyethylimidazolium chloride (crystal structure presented). Conversion to defined hydroxyethylimidazol-2-ylidene nickel complexes failed, but was accomplished with 1-methyl-3-acetophenyl-imidazolium bromide. The bis(NHC⋂O−) nickel(II) chelate is formed, rather than a methallylnickel monochelate, but with nickelocene a monochelate NiCp complex was detected. The bulky 1-(2,6-diisopropylphenyl)-3-(2’-phenyl-enolato)-imidazol-2-ylidene allylpalladium chloride was obtained in pure form. Attempts to generate catalysts for ethylene oligomerization by in situ techniques have failed so far whereas P⋂O− ligands, comparable by the P-C diagonal relationship, provide active catalysts.

Charge-tagged N-heterocyclic carbenes (NHC): Direct transfer from ionic liquid solutions and long-lived nature in the gas phase

2017 ◽  
Vol 28 (6) ◽  
pp. 1021-1029 ◽  
Author(s):  
Thyago S. Rodrigues ◽  
Denis Lesage ◽  
Wender A. da Silva ◽  
Richard B. Cole ◽  
Günter Ebeling ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Gas Phase ◽  
Heterocyclic Carbenes ◽  
Direct Transfer ◽  
Liquid Solutions

scholarly journals N-Heterocyclic Carbene-Promoted Rauhut–Currier Reactions between Vinyl Sulfones and ?,?-Unsaturated Aldehydes

2011 ◽  
Vol 64 (8) ◽  
pp. 1158 ◽  
Author(s):  
Roxanne L. Atienza ◽  
Karl A. Scheidt
Keyword(s):  
Reaction Pathway ◽  
Conjugate Addition ◽  
Heterocyclic Carbenes ◽  
Vinyl Sulfone ◽  
Type Reaction ◽  
Unsaturated Aldehydes

N-heterocyclic carbenes (NHCs) promote the addition of 1,1-bis(phenylsulfonyl)ethylene to the α-position of α,β-unsaturated aldehydes. The proposed reaction pathway for this Rauhut–Currier-type reaction includes an unusual conjugate addition of an NHC to a bis-vinyl sulfone.

N-heterocyclic carbenes with negative-charge tags: direct sampling from ionic liquid solutions

RSC Advances ◽  
2012 ◽  
Vol 2 (8) ◽  
pp. 3201 ◽  
Author(s):  
Priscila M. Lalli ◽  
Thyago S. Rodrigues ◽  
Aline M. Arouca ◽  
Marcos N. Eberlin ◽  
Brenno A. D. Neto
Keyword(s):  
Ionic Liquid ◽  
Negative Charge ◽  
Heterocyclic Carbenes ◽  
Direct Sampling ◽  
Liquid Solutions ◽  
Charge Tags
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