Article (Scientific journals)
N-heterocyclic carbene catalyzed carba-, sulfa-, and phospha-Michael additions with NHC·CO2 adducts as precatalysts
Hans, Morgan; Delaude, Lionel; Rodriguez, Jean et al.
2014In Journal of Organic Chemistry, 79 (6), p. 2758-2764
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Keywords :
Addition reactions; Carboxylation; Catalysis; Organic compounds; Azolium salts; Michael additions; N-heterocyclic carbenes; Precatalysts; Carbon dioxide; Michael addition
Abstract :
[en] N-heterocyclic carbene catalyzed Michael additions have been revisited with 1,3-dialkyl- or 1,3-diarylimidazol(in)ium-2-carboxylates, that is, NHC·CO2 adducts, as the source of the free NHC catalysts in solution. Using these precatalysts, a number of efficient carba-, sulfa-, and phospha-Michael additions were achieved very conveniently, without the need for an external strong base to generate the NHC by deprotonation of an azolium salt. To further expand the scope of the procedure, some NHC-catalyzed sulfa-Michael/aldol organocascades were also investigated.
Disciplines :
Chemistry
Author, co-author :
Hans, Morgan ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie macromoléculaire et catalyse organique
Delaude, Lionel  ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie organométallique et catalyse homogène
Rodriguez, Jean;  Aix Marseille Université, Centrale Marseille, CNRS, 13397 Marseille, France
Coquerel, Yoann;  Aix Marseille Université, Centrale Marseille, CNRS, 13397 Marseille, France
Language :
English
Title :
N-heterocyclic carbene catalyzed carba-, sulfa-, and phospha-Michael additions with NHC·CO2 adducts as precatalysts
Publication date :
2014
Journal title :
Journal of Organic Chemistry
ISSN :
0022-3263
eISSN :
1520-6904
Publisher :
American Chemical Society, Washington, United States - District of Columbia
Volume :
79
Issue :
6
Pages :
2758-2764
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 28 April 2014

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