NHCs – Highly Versatile Organocatalysts
199
Acknowledgements. Generous financial support by the Deutsche Forschungsgemeinschaft (DFG priority program SPP1179 ‘organocatalysis’) and by the
Fonds der Chemischen Industrie (Liebig fellowship) is gratefully acknowledged.
References
Alcarazo M, Roseblade SJ, Cowley AR, Fernandez R, Brown JM, Lassaletta
JM (2005) Imidazo[1,5-a]pyridine: a versatile architecture for stable Nheterocyclic carbenes. J Am Chem Soc 127:3290–3291
Altenhoff G, Goddard R, Lehmann CW, Glorius F (2004) Sterically demanding, bisoxazoline–derived N–heterocyclic carbene ligands with restricted
flexibility for catalysis. J Am Chem Soc 126:15195–15201
Barrett AGM, Love AC, Tedeschi L (2004) ROMPgel-supported thiazolium
iodide: an efficient supported organic catalyst for parallel Stetter reactions.
Org Lett 6:3377–3380
Benaglia M (2006) Recoverable and recyclable chiral organic catalysts. New J
Chem 30:1525–1533
Breslow R (1958) Mechanism of thiamine action. IV. Evidence from studies on
model systems. J Am Chem Soc 80:3719–3726
Burstein C, Glorius F (2004) Organocatalyzed conjugate umpolung of α,βunsaturated aldehydes for the synthesis of γ-butyrolactones. Angew Chem
Int Ed 43:6205–6208
Burstein C, Lehmann CW, Glorius F (2005) Imidazo[1,5-a]pyridine-3-ylidenespyridine derived N-heterocyclic carbene ligands. Tetrahedron 61:6207–6217
Burstein C, Tschan S, Xie X, Glorius F (2006) N-Heterocyclic carbene-catalyzed conjugate umpolung for the synthesis of γ–butyrolactones. Synthesis
14:2418–2439
Chan A, Scheidt KA (2005) Conversion of α,β-unsaturated aldehydes into saturated esters: an umpolung reaction catalyzed by nucleophilic carbenes. Org
Lett 7:905–908
Chan A, Scheidt KA (2006) Hydroacylation of activated ketones catalyzed by
N-heterocyclic carbenes. J Am Chem Soc 128:4558–4559
Chan A, Scheidt KA (2007) Highly stereoselective formal [3+3] cycloaddition of enals and azomethine imines catalyzed by N-heterocyclic carbenes.
J Am Chem Soc 129:5334–5335
Chiang PC, Kaeobamrung J, Bode JW (2007) Enantioselective, cyclopenteneforming annulations via NHC-catalyzed benzoin-oxy-Cope reactions. J Am
Chem Soc 129:3520–3521
Chow KYK, Bode JW (2004) Catalytic generation of activated carboxylates:
Direct, stereoselective synthesis of β–hydroxyesters from epoxyaldehydes.
J Am Chem Soc 126:8126–8127
199
Acknowledgements. Generous financial support by the Deutsche Forschungsgemeinschaft (DFG priority program SPP1179 ‘organocatalysis’) and by the
Fonds der Chemischen Industrie (Liebig fellowship) is gratefully acknowledged.
References
Alcarazo M, Roseblade SJ, Cowley AR, Fernandez R, Brown JM, Lassaletta
JM (2005) Imidazo[1,5-a]pyridine: a versatile architecture for stable Nheterocyclic carbenes. J Am Chem Soc 127:3290–3291
Altenhoff G, Goddard R, Lehmann CW, Glorius F (2004) Sterically demanding, bisoxazoline–derived N–heterocyclic carbene ligands with restricted
flexibility for catalysis. J Am Chem Soc 126:15195–15201
Barrett AGM, Love AC, Tedeschi L (2004) ROMPgel-supported thiazolium
iodide: an efficient supported organic catalyst for parallel Stetter reactions.
Org Lett 6:3377–3380
Benaglia M (2006) Recoverable and recyclable chiral organic catalysts. New J
Chem 30:1525–1533
Breslow R (1958) Mechanism of thiamine action. IV. Evidence from studies on
model systems. J Am Chem Soc 80:3719–3726
Burstein C, Glorius F (2004) Organocatalyzed conjugate umpolung of α,βunsaturated aldehydes for the synthesis of γ-butyrolactones. Angew Chem
Int Ed 43:6205–6208
Burstein C, Lehmann CW, Glorius F (2005) Imidazo[1,5-a]pyridine-3-ylidenespyridine derived N-heterocyclic carbene ligands. Tetrahedron 61:6207–6217
Burstein C, Tschan S, Xie X, Glorius F (2006) N-Heterocyclic carbene-catalyzed conjugate umpolung for the synthesis of γ–butyrolactones. Synthesis
14:2418–2439
Chan A, Scheidt KA (2005) Conversion of α,β-unsaturated aldehydes into saturated esters: an umpolung reaction catalyzed by nucleophilic carbenes. Org
Lett 7:905–908
Chan A, Scheidt KA (2006) Hydroacylation of activated ketones catalyzed by
N-heterocyclic carbenes. J Am Chem Soc 128:4558–4559
Chan A, Scheidt KA (2007) Highly stereoselective formal [3+3] cycloaddition of enals and azomethine imines catalyzed by N-heterocyclic carbenes.
J Am Chem Soc 129:5334–5335
Chiang PC, Kaeobamrung J, Bode JW (2007) Enantioselective, cyclopenteneforming annulations via NHC-catalyzed benzoin-oxy-Cope reactions. J Am
Chem Soc 129:3520–3521
Chow KYK, Bode JW (2004) Catalytic generation of activated carboxylates:
Direct, stereoselective synthesis of β–hydroxyesters from epoxyaldehydes.
J Am Chem Soc 126:8126–8127