ChemNews August 2006


Monthly Chemistry eNewsletter from Sigma-Aldrich

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NEW LITERATURE

Vol. 6, No. 7
Multi-Component Reactions
(1.12 MB PDF)

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Palladium Catalysts for Coupling

673064
Precursor to Pd(I) catalyst used in organosilanol cross-coupling.

Organocatalysts

668540 MacMillan OrganoCatalyst™ for enantioselective ketone Diels-Alder reactions.	06542 Organocatalyst for asymmetric alkylation of glycine imines.

51266 Organocatalyst for the preparation of highly functionalized cyclopropanes.	674788 Organocatalyst for the asymmetric synthesis of quaternary centers via the Stetter reaction.

Ruthenium Catalysts

668281
Used in conjunction with lipase in the Dynamic Kinetic Resolution (DKR) of ketones.

667412
Hydrosilylation catalyst for preparation of
α-vinylsilanes.

Other Catalysts

665142 Catalyst used in Claisen rearrangements, Conia-Ene reactions, and dihydropyran synthesis.	665185 Catalyst used in the preparation of substituted pyrroles via the Schmidt reaction of azido alkynes.

665096 Rhenium catalyst for the addition of nucleophiles to oleosaccharides.	668001 Gold(I) halide catalyst activator.

Phosphines

666572	667196 Ligand for hydroformylation of alkenes and cross-coupling.

668966 Ligand for asymmetric conjugate reductions, aldol reactions, and enantioselective cycloadditions.	668982 Ligand for the reduction of ketones and Pd-catalyzed C-O bond formation.

Other Ligands

669490

672254

673188

Ligand for Rh-catalyzed conjugate additions.

NHC ligand for cross-coupling.


673404	595721	675229
NHC ligand for cross-coupling.	Ligand for Zn-catalyzed enantioselective Hetero Diels-Alder reaction and Zr-catalyzed Strecker reaction.	Ligand for Mo-catalyzed RCM reactions.