Home  About us  Contact
 

Aryl Halides (aryl + halide)

Distribution by Scientific Domains
Chemistry99%
Distribution within Chemistry
Organic Chemistry79%
General & Introductory Chemistry7%
3 Other Subdomains14%

Terms modified by Aryl Halides

  • aryl halide Catalyze
    		•

    Selected Abstracts

    Reusable, Polystyrene-Resin-Supported, Palladium-Catalyzed, Atom-Efficient Cross-Coupling Reaction of Aryl Halides with Triarylbismuths

    EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 3 2010
    Wen-Jun Zhou
    Abstract A rapid, atom-efficient, cross-coupling reaction of triarylbismuths with aryl bromides or aryl iodides was reported, and the reaction involves the use of a catalytic amount of polystyrene-supported palladium in the presence of KF as base in DMSO at 105 °C in an open atmosphere. All three aryl groups of the triarylbismuths participated in the reaction and produced polyfunctional biaryls in excellent yields. The polymeric catalyst can be easily separated from the reaction mixture and reused more than 10 times without showing any obvious decrease in activity. [source]

    Efficient Copper(I)-Catalyzed C,S Cross Coupling of Thiols with Aryl Halides in Water

    EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 4 2008
    Laxmidhar Rout
    Abstract CuI efficiently catalyzes the C,S cross coupling of thiols with aryl halides in the presence of tetrabutylammonium bromide in water. The reactions with aryl thiols that have electron-withdrawing and -donating substituents are comparable and afford C,S cross-coupling products in high yield. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008) [source]

    CuI/DABCO-Catalyzed Cross-Coupling Reactions of Aryl Halides with Arylboronic Acids

    EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 9 2006
    Jin-Heng Li
    Abstract CuI combined with DABCO (1,4-diaza-bicyclo[2.2.2]octane) was developed as an inexpensive and efficient catalytic system for the Suzuki,Miyaura cross-coupling of aryl halides with arylboronic acids. The couplings between aryl iodides and arylboronic acids catalyzed by catalytic amounts of CuI and DABCO proceeded smoothly in moderate to excellent yields. However, the CuI/DABCO system was less efficient in the reactions of aryl bromides, and a higher reaction temperature was required to improve the yield. For the less activated aryl bromides, a stoichiometric amount of CuI together with TBAB was necessary to obtain satisfactory yields. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006) [source]

    Recyclable Heterogeneous Supported Copper-Catalyzed Coupling of Thiols with Aryl Halides: Base-Controlled Differential Arylthiolation of Bromoiodobenzenes

    ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 14-15 2009
    Sukalyan Bhadra
    Abstract Alumina-supported copper sulfate efficiently catalyzes the S -arylation of aromatic, heteroaromatic and aliphatic thiols with aryl as well as heteroaryl halides under aerobic, ligand-free conditions. This protocol provides an easy access to a variety of thioethers as well as unsymmetrical bis-thioethers by base-controlled differential coupling of thiols with iodo- and bromo-substituents in an aromatic halide. The catalyst is inexpensive, non-air sensitive, environmentally friendly and recyclable. [source]

    An Efficient Copper-Catalyzed Amination of Aryl Halides by Aqueous Ammonia

    ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 11-12 2009
    Deping Wang
    Abstract The copper(I) bromide/1-(5,6,7,8-tetrahydroquinolin-8-yl)-2-methylpropan-1-one (CuBr- L3) combination catalyzed the cross-coupling reactions between aryl or heteroaryl halides and aqueous ammonia with high yields to produce primary aromatic or heteroaromatic amines at room temperature or under mild conditions. [source]

    Efficient Cross-Coupling Reactions of Nitrogen Nucleophiles with Aryl Halides in Water

    ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 9 2009
    Yong-Chua Teo
    No abstract is available for this article. [source]

    Efficient Cross-Coupling Reactions of Nitrogen Nucleophiles with Aryl Halides in Water

    ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 5 2009
    Yong-Chua TeoArticle first published online: 17 MAR 200
    Abstract A facile and practical strategy has been developed for the N -arylation of nitrogen nucleophiles with aryl halides catalyzed by a combination of iron(III) chloride [FeCl3] and dimethylethylenediamine (dmeda) in water. A variety of nitrogen nucleophiles including pyrazole, indole, 7-azaindole and benzamide afforded the N -arylated products in the presence of the catalytic system (in up to 88% yield). [source]

    Nickel-Catalyzed Synthesis of Phosphonium Salts from Aryl Halides and Triphenylphosphine

    ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 18 2008
    David Marcoux
    Abstract An efficient method to synthesize functionalized tetraarylphosphonium salts is described. The nickel-catalyzed coupling reaction between aryl iodides, bromides, chlorides, or triflates and triphenylphosphine generates tetraarylphosphonium salts in high yields. The coupling is wide in scope and tolerates a variety of functional groups such as alcohols, amides, ketones, aldehydes, phenols, phosphines and amines. [source]

    Mechanistic Inferences Derived from Competitive Catalytic Reactions: Pd(binap)-Catalyzed Amination of Aryl Halides

    ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 7-8 2008
    Antonio
    Abstract Healthy competition: The Pd(binap)-catalyzed amination of aryl halides demonstrates how the results from competitive reactions can be strikingly different from those obtained from study of the separate reactions. We show how the competitive network provides mechanistic information not accessible from study of the reactions separately. [source]

    Cover Picture: Industrial-Scale Palladium-Catalyzed Coupling of Aryl Halides and Amines ,A Personal Account (Adv. Synth.

    ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 1-2 2006
    Catal.
    Abstract The cover picture shows a typical vessel for industrial scale-up of chemical reactions, in this case for the synthesis of dialkylphosphinobiphenyl ligands. These ligands are important catalyst components for the amination of aryl halides. For more details, see the Review by Stephen L. Buchwald, Christelle Mauger, Gerard Mignani, and Ulrich Scholz on pages 23,,,39. [source]

    Nanocrystalline Magnesium Oxide-Stabilized Palladium(0): An Efficient and Reusable Catalyst for Suzuki and Stille Cross-Coupling of Aryl Halides

    ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 15 2005
    Kantam, M. Lakshmi
    Abstract A nanocrystalline magnesium oxide-stabilized palladium(0) catalyst is prepared by counterion stabilization of PdCl42, with nanocrystalline MgO followed by reduction. This ligand-free heterogeneous nanocrystalline MgO-stabilized nanopalladium [NAPMgPd(0)] catalyst using the basic MgO in place of basic ligands exhibits excellent activity in Suzuki and Stille cross-coupling of haloarenes (chloro, bromo and iodo) to afford the unsymmetrical biaryls. The catalyst is quantitatively recovered by simple filtration and reused for four cycles with almost consistent activity. [source]

    Copper(I) Phenoxide Complexes in the Etherification of Aryl Halides,

    ANGEWANDTE CHEMIE, Issue 12 2010
    Jesse
    Was ist der richtige Weg? Kupfer(I)-Phenoxid-Komplexe mit Chelatliganden (siehe Bild) sind mögliche Intermediate bei Kupfer-katalysierten Veretherungen von Arylhalogeniden. Sie wurden nun synthetisiert und vollständig charakterisiert. Es wurde demonstriert, dass die isolierten Komplexe in kinetischer und chemischer Hinsicht plausible Zwischenstufen bei der Synthese von Arylphenylethern sind. Ein Verlauf über Radikale wurde experimentell ausgeschlossen. [source]

    Iron-Catalyzed Direct Arylation of Unactivated Arenes with Aryl Halides,

    ANGEWANDTE CHEMIE, Issue 11 2010
    Wei Liu
    Eiserne Hilfe: Eine Vielzahl an Arylhalogeniden wurde mit nichtaktivierten Arenen in mäßigen bis guten Ausbeuten zu Biarylverbindungen umgesetzt. Die Reaktionen wurden bei relativ niedriger Temperatur in Gegenwart katalytischer Mengen FeCl3 mit DMEDA als Ligand und LiHMDS als Base durchgeführt (siehe Schema; DMEDA=N,N' -Dimethylethan-1,2-diamin, HDMS=Hexamethyldisilazanid). [source]

    Palladium-Catalyzed Hydroxylation of Aryl Halides under Ambient Conditions

    ANGEWANDTE CHEMIE, Issue 50 2009
    Alexey
    No abstract is available for this article. [source]

    Synthesis of Phenol, Aromatic Ether, and Benzofuran Derivatives by Copper-Catalyzed Hydroxylation of Aryl Halides,

    ANGEWANDTE CHEMIE, Issue 46 2009
    Dongbing Zhao
    Gruppentausch: Die kupferkatalysierte Synthese von Phenolen aus Arylhalogeniden gelang unter relativ milden Reaktionsbedingungen. Alkylarylether und Benzofurane ließen sich glatt durch Eintopf-Dominoreaktionen herstellen, die auf einer Hydroxylierung von Aryliodiden beruhten (siehe Schema). [source]

    Palladium-Catalyzed Hydroxylation of Aryl Halides under Ambient Conditions,

    ANGEWANDTE CHEMIE, Issue 41 2009
    Alexey
    Schon bei Raumtemperatur lassen sich Arylbromide und -chloride unter Pd-Katalyse in Phenole umwandeln. Aus Studien zur Pd-vermittelten Hydroxylierung von Arylhalogeniden mit einem sperrigen Imidazolylphosphan-Ligand und der neuartigen Palladiumquelle [Pd(cod)(CH2SiMe3)2] in stöchiometrischen Mengen resultierte die gezeigte effiziente katalytische Phenolsynthese (Ad=Adamantyl, cod=Cyclooctadien). [source]

    ChemInform Abstract: Manganese-Catalyzed Cross-Coupling Reactions of Aliphatic Amines with Aryl Halides.

    CHEMINFORM, Issue 43 2010
    Fui-Fong Yong
    Abstract An optimized catalytic system is developed for the N-arylation of primary and secondary amines with aryl bromides and iodides. [source]

    ChemInform Abstract: Recyclable Iron/Graphite Catalyst for C,S Cross Coupling of Thiols with Aryl Halides under Ligand-Free Conditions.

    CHEMINFORM, Issue 37 2010
    Vijay Kumar Akkilagunta
    Abstract The novel heterogeneous iron catalyst is highly efficient for a broad spectrum of iodides and thiols and can be recycled up to 7 times without loss of activity. [source]

    ChemInform Abstract: A Simple and Efficient Catalytic System for Coupling Aryl Halides with Aqueous Ammonia in Water.

    CHEMINFORM, Issue 35 2010
    Zhiqing Wu
    No abstract is available for this article. [source]

    ChemInform Abstract: A Highly Efficient and Widely Functional-Group-Tolerant Catalyst System for Copper(I)-Catalyzed S-Arylation of Thiols with Aryl Halides.

    CHEMINFORM, Issue 11 2010
    Yang Feng
    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]

    ChemInform Abstract: A Novel Palladium-Catalyzed Amination of Aryl Halides with Amines Using rac-P-Phos as the Ligand.

    CHEMINFORM, Issue 47 2009
    Huansheng Chen
    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]

    ChemInform Abstract: A Facile Route to Aryl Boronates: Room-Temperature, Copper-Catalyzed Borylation of Aryl Halides with Alkoxy Diboron Reagents.

    CHEMINFORM, Issue 46 2009
    Christian Kleeberg
    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]

    ChemInform Abstract: An Efficient Copper(I) Complex Catalyzed Sonogashira-Type Cross-Coupling of Aryl Halides with Terminal Alkynes.

    CHEMINFORM, Issue 38 2009
    K. G. Thakur
    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]

    ChemInform Abstract: One-Pot N-Arylation of Indoles Directly from N-Arylsulfonylindoles via Consecutive Deprotection and SNAr Reactions with Activated Aryl Halides.

    CHEMINFORM, Issue 36 2009
    Hui Xu
    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]

    ChemInform Abstract: Indium-Catalyzed C,S Cross-Coupling of Aryl Halides with Thiols.

    CHEMINFORM, Issue 35 2009
    V. Prakash Reddy
    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]

    ChemInform Abstract: Nano Indium Oxide as a Recyclable Catalyst for C,S Cross-Coupling of Thiols with Aryl Halides under Ligand Free Conditions.

    CHEMINFORM, Issue 35 2009
    Vutukuri Prakash Reddy
    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]

    ChemInform Abstract: Palladium on Carbon-Catalyzed Cross-Coupling of Aryl Halides with Potassium p-Tolyltrifluoroborate in Air.

    CHEMINFORM, Issue 32 2009
    Carl R. LeBlond
    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]

    ChemInform Abstract: Efficient Cross-Coupling Reactions of Nitrogen Nucleophiles with Aryl Halides in Water.

    CHEMINFORM, Issue 30 2009
    Yong-Chua Teo
    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]

    ChemInform Abstract: Synthesis of Prenylarenes and Related (Multisubstituted Allyl)arenes from Aryl Halides and Homoallyl Alcohols via Palladium-Catalyzed Retro-Allylation.

    CHEMINFORM, Issue 23 2009
    Masayuki Iwasaki
    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]

    ChemInform Abstract: Nickel-Catalyzed Synthesis of Phosphonium Salts from Aryl Halides and Triphenylphosphine.

    CHEMINFORM, Issue 19 2009
    David Marcoux
    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]