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Allylic Halides (allylic + halide)

Distribution by Scientific Domains
Chemistry100%
Distribution within Chemistry
Organic Chemistry57%
General & Introductory Chemistry42%

Selected Abstracts

ChemInform Abstract: Copper-Catalyzed Regioselective Coupling of Allylic Halides and Alkynes Promoted by Weak Inorganic Bases.

CHEMINFORM, Issue 2 2008
Lothar W. Bieber
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 of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

Palladium-Catalyzed Phosphorus,Carbon Bond Formation: Cross-Coupling Reactions of Alkyl Phosphinates with Aryl, Heteroaryl, Alkenyl, Benzylic, and Allylic Halides and Triflates.

CHEMINFORM, Issue 42 2005
Karla Bravo-Altamirano
Abstract For Abstract see ChemInform Abstract in Full Text. [source]

ChemInform Abstract: Regioselective Palladium-Catalyzed Alkylation of Allylic Halides with Benzylic Grignard Reagents.

CHEMINFORM, Issue 30 2002
Tetracyclic Polyprenoid Compounds., Two-Step Synthesis of Abietane Terpenes
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]

High Diversity on Simple Substrates: 1,4-Dihalo-2-butenes and Other Difunctionalized Allylic Halides for Copper-Catalyzed SN2, Reactions

CHEMISTRY - A EUROPEAN JOURNAL, Issue 34 2008
Caroline A. Falciola Dr.
Abstract Enantioselective allylic alkylation with an organomagnesium reagent catalyzed by copper thiophene carboxylate (CuTC) was carried out on difunctionalized substrates, such as commercially available 1,4-dichloro-2-butene and 1,4-dibromo-2-butene, and on similar compounds of higher substitution pattern of the olefin for the formation of all-carbon chiral quaternary centers. The high regioselectivity obtained throughout the reactions favored good regiocontrol for the addition of phenyl Grignard reagents. Other difunctionalized substrates (allylic ethers and allylic alcohols) also underwent asymmetric SN2, substitution. [source]

Mapping the Mechanism of Nickel-Ferrophite Catalysed Methylation of Baylis,Hillman-Derived SN2, Electrophiles

EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 6 2009
Andrew Novak
Abstract Enantioselective Ni-catalysed methylation of Baylis,Hillman-derived allylic electrophiles in the presence of ferrophite ligands has been investigated computationally and experimentally. The sense and degree of enantioselectivity attained is independent of both the leaving group and the isomeric structure of the initial allylic halide. DFT studies support the selective formation of a limited number of energetically favoured anti and syn ,-allyl intermediates. The observed regio- and enantioselectivity can be rationalised based on the energetics of these structures. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009) [source]

Ruthenium-Catalyzed Synthesis of Allylic Alcohols: Boronic Acid as a Hydroxide Source

CHEMISTRY - A EUROPEAN JOURNAL, Issue 18 2008
Asmae Bouziane
Abstract Secondary allylic alcohols were synthesized from linear allylic halides or carbonates using a catalytic amount of a ruthenium complex in the presence of boronic acid. The effects of solvent, base, ruthenium precursor, and boronic acid were fully explored, and the scope of the reaction was extended to various substrates. We also describe a preliminary investigation towards an enantioselective process. Les alcools allyliques secondaires ont été préparés à partir de chlorures ou de carbonates allyliques linéaires en présence d,acide boronique et d,une quantité catalytique de complexe de ruthénium. Les effets de la base, du solvant et du précurseur de ruthénium ont été étudiés. Cette nouvelle réaction a été étendue à différents chlorures de cinnamyle. Lors de cette étude, nous décrivons d,autre part les premiers résultats en catalyse énantiosélective. [source]

Use of Cyclic Allylic Bromides in the SnCl2/Cu-mediated Aqueous Carbonyl Allylation Reaction

CHINESE JOURNAL OF CHEMISTRY, Issue 3 2005
Tan Xiang-Hui
Abstract Five- and six-membered cyclic allylic halides were found to be much less reactive than the acyclic allylic halides in aqueous allylation reactions. Nevertheless, it was found that SnCl2/Cu was powerful enough to mediate the aqueous allylation reactions involving cyclic allylic halides. Both the aliphatic and aromatic aldehydes could beefficiently allylated and the reaction condition was mild, simple and safe. The yields were usually in 75%,97% and the reaction was erythro selective. [source]