ChemNews September 2005

Monthly Chemistry eNewsletter from Sigma-Aldrich

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Hot News

Sodium borohydride stabilized BH3-THF now available in an 800mL pack size!

Due to stricter safety regulations, this reducing agent (176192) had not been available in package sizes greater than 100mL. Sigma-Aldrich has recently achieved full compliance with DOT safety regulations and is able to offer this extremely important reagent in an 800mL unit.

Click here to view the product and order.

Diethyl Azodicarboxylate: Back From the DEAD


NEW LITERATURE
Catalysis ChemFiles View PDF (1.62 MB)		Reduction ChemFiles View PDF (966 KB)

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NEW PRODUCTS
Chiral Catalysts for Asymmetric Hydrogenation


659622	659673	659703

Polymer-Bound Catalysts

Catalyst for Khand cyclization
589268

Enantioselective
deprotonation catalyst
576395

Catalyst for
hydrosilation of alkenes
660965

Catalyst for enantioselective
reduction of ketones
643947

Catalysts for asymmetric
alkylation reactions
(S) 649031 (R) 651508

Catalyst for hydrogenation of functionalized aldehydes,
alkenes and alkynes
636665

Polymer-Bound Lewis Acids

Used in Bignelli
multi-component reactions
641030

Promotes epoxide
ring opening reactions
590312

Promotes reactions of
nucleophiles on carbonyls
643718

NHC and Phosphine Ligands

Boron Reagents for Suzuki Coupling

Unnatural Amino Acids

73489	53636	67387
51916	50996	53229

Aldehydes

Ionic Liquids

00738	07424	43961

51027	55220	49914

PRODUCT SPOTLIGHTS

Ionic Liquids for Catalysis

Iodotoluene Difluoride - A New, Mild Oxidation and Fluorination Reagents

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