Enantioselective synthesis of highly functionalised amides by copper-catalysed vinylogous Mukaiyama aldol reaction.

@article{Frings2010EnantioselectiveSO,
  title={Enantioselective synthesis of highly functionalised amides by copper-catalysed vinylogous Mukaiyama aldol reaction.},
  author={Marcus Frings and Daniel Goedert and Carsten Bolm},
  journal={Chemical communications},
  year={2010},
  volume={46 30},
  pages={
          5497-9
        }
}
Amides with quaternary stereogenic centers have been synthesised by catalytic asymmetric vinylogous Mukaiyama aldol reactions. The chiral copper-sulfoximine catalyst gives rise to products with moderate to good yields and up to 92% ee. 
42 Citations

Enantioselective Synthesis of Highly Functionalized Amides by Copper-Catalyzed Vinylogous Mukaiyama Aldol Reaction.

The title reaction affords amides with quaternary stereogenic centers in moderate to good yields and with up to 92% e.e.

Direct enantioselective amination of α-ketoesters catalyzed by an axially chiral guanidine base.

The reaction produces enantioenriched multifunctionalized ketoesters which can be readily derivatized to β-amino-α-hydroxy esters with an aliphatic substituent at the β-position.

Asymmetric Copper-Catalyzed Vinylogous Mukaiyama Michael Addition of Cyclic Dienol Silanes to Unsaturated α-Keto Phosphonates.

A highly stereoselective vinylogous Mukaiyama Michael reaction (VMMR) leading to α-keto phosphonate-containing γ-butenolides with two stereogenic centers is described. The presented transformation is

The Copper‐Catalyzed Oxidative N‐Acylation of Sulfoximines

An oxidative cross-coupling reaction between aldehydes and sulfoximines involving dual CH/NH functionalization has been developed and proceeds under mild reaction conditions to afford a series of valuable N-acylated sulf oximine derivatives in excellent yields.

Catalytic, asymmetric synthesis of phosphonic γ-(hydroxyalkyl)butenolides with contiguous quaternary and tertiary stereogenic centers.

A procedure that enables high yielding access to phosphonic γ-(hydroxyalkyl)butenolides with excellent regio-, diastereo- and enantiocontrol is reported. The simultaneous construction of up to two

Synthesis of chiral sulfoximines derived from 3-aminoquinazolinones and their catalysis of enantioselective diethylzinc addition to aldehydes.

Sulfoximinated sulfoxides were applied for the first time in catalytic enantioselective addition to aromatic aldehydes with a product enantiopurity (ee) of 92% in the case of 2-methoxybenzaldehyde.

Sulfoximinocarbonylation of aryl halides using heterogeneous Pd/C catalyst

A three component protocol has been developed for the synthesis of N-aroyl sulfoximines by the carbonylation of aryl halides followed by nucleophilic attack of NH-sulfoximines. This reaction

Transition metal-free aroylation of NH-sulfoximines with methyl arenes.

A novel protocol towards N-aroylated sulfoximines from NH-sulfoximines and methyl arenes was herein demonstrated. The reaction took place in the presence of elemental iodine, requiring no external

Copper-catalyzed oxidative cross-coupling of sulfoximines and alkynes.

This work considered oxidative cross-coupling methods for the construction of the respective C N bonds between two nucleophiles and found that this approach could also open access to N-alkynylated sulfoximines, an essentially unexplored substrate class.

References

SHOWING 1-10 OF 30 REFERENCES

Catalyzed vinylogous Mukaiyama aldol reactions with controlled enantio- and diastereoselectivities.

A new catalytic vinylogous Mukaiyama aldol reaction provides products with high diastereo- and enantioselectivities and relative and absolute stereochemistry of a representative product was rigorously assigned by NMR and CD spectroscopies, X-ray diffraction, and quantum-chemical calculations.

Sulfoximines as ligands in copper-catalyzed asymmetric vinylogous Mukaiyama-type aldol reactions.

[reaction: see text] gamma,delta-Unsaturated alpha-hydroxy diesters with quaternary centers have been obtained with up to 99% ee in high yields using catalysts prepared from copper(II) triflate and

A catalytic asymmetric vinylogous Mukaiyama aldol reaction.

A vinylogous Mukaiyama aldol reaction, conducted using 10 mol % of a BITIP catalyst and B(OMe)3 as an additive, effects an enantioselective four-carbon chain extension to give versatile

C1-symmetric oxazolinyl sulfoximines as ligands in copper-catalyzed asymmetric mukaiyama aldol reactions.

Aryl-bridged C1-symmetric oxazolinyl sulfoximines are applicable in copper-catalyzed asymmetric Mukaiyama aldol reactions with methyl pyruvate and represent valuable precursors for biologically active molecules.

C1-symmetric aminosulfoximines in copper-catalyzed asymmetric vinylogous Mukaiyama aldol reactions.

Vinylogous Mukaiyama-type aldol reactions have been catalyzed by a combination of Cu(OTf)2 and readily available C1-symmetric aminosulfoximines, achieving high stereoselectivities and excellent yields.

Enantioselective Halogenation of β‐Oxo Esters Catalyzed by a Chiral Sulfoximine–Copper Complex

A C1-symmetric amino sulfoximine has been used as a chiral ligand in copper-catalyzed asymmetric halogenation reactions of β-oxo esters. Both the catalyst itself and the reaction conditions were

Brønsted acid-catalyzed, enantioselective, vinylogous Mannich reaction of vinylketene silyl N,O-acetals.

Vinylketene silyl N, O-acetals undergo chiral phosphoric acid-catalyzed, vinylogous Mukaiyama-Mannich reactions with imines and afford delta-amino-alpha,beta-unsaturated amides in typically good

Sulfoximines: Synthesis and Catalytic Applications

Chiral sulfoximines have a stereogenic center at the sulfur atom and their use in asymmetric synthesis is well established. Recently, sulfoximines have been recognized as an interesting new class of

Oxazaborolidinone-promoted vinylogous Mukaiyama aldol reactions.

Delta-Hydroxy-alpha,beta-unsaturated carbonyl compounds were prepared in one step via the vinylogous Mukaiyama aldol reactions with O,O-silyl ketene acetals to obtain gamma-alkylated product in high enantioselectivities.