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Conjugate Addition Reactions (conjugate + addition_reaction)

Distribution by Scientific Domains

Chemistry	100%

Selected Abstracts

Ferric Chloride Hexahydrate-Catalyzed Highly Regio- and Stereoselective Conjugate Addition Reaction of 2,3-Allenoates with Grignard Reagents: An Efficient Synthesis of ,,,-Alkenoates

ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 11-12 2009
Guobi Chai
Abstract Ferric chloride hexahydrate was shown to be an efficient catalyst for the conjugate addition of 2,3-allenoates with alkyl-, aryl-, or vinyl-Grignard reagents to synthesize polysubstituted ,,,-unsaturated alkenoates with high regio- and stereoselectivity. The in situ formed magnesium dienolate may readily react with different electrophilic reagents under different reaction conditions with or without a catalyst to construct an allylic quaternary carbon at the ,-position of the ester group and a stereocontrollable retention of the carbon-carbon double bond. [source]

Asymmetric Three- and [2 + 1]-Component Conjugate Addition Reactions for the Stereoselective Synthesis of Polysubstituted Piperidinones.

CHEMINFORM, Issue 38 2007
Stephen G. Davies
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]

Palladium(II)-Catalyzed Coupling of Allenoic Acids and ,,,-Unsaturated Carbonyl Compounds Through Tandem Intramolecular Oxypalladation and Conjugate Addition Reactions.

CHEMINFORM, Issue 13 2003
Guosheng Liu
Abstract For Abstract see ChemInform Abstract in Full Text. [source]

ChemInform Abstract: Conjugate Addition Reactions of ,-Aminoalkylcuprates with ,,,-Enones and Enals.

CHEMINFORM, Issue 9 2001
R. Karl Dieter
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

Co-Metal-Free Enantioselective Conjugate Addition Reactions of Zinc Reagents

CHEMISTRY - A EUROPEAN JOURNAL, Issue 36 2008
Sefer Ay Dipl.-Chem.
Abstract Asymmetric conjugate addition of diethylzinc to cinnamaldehyde in a co-metal-free fashion by using N,O-ligands with planar and central chirality is described. Different modulations of the ligand structure, including several combinations of the chiral units, indicate that a [2.2]paracyclophane backbone is essential for the activity and the enantioselectivity of the generated active catalyst. By using the optimized ligand, an isolated yield of 90,% was obtained with up to 99,%,ee. [source]