Home About us Contact
|
Home About us Contact | ||
|
|
||
Benzyl Halides (benzyl + halide)
Selected AbstractsA Mild and Efficient Iron-Catalyzed Synthesis of Alkenyl Halides via Direct Addition of Benzyl Halides to ArylalkynesADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 3 2009Zhongquan Liu Abstract An efficient and mild iron-catalyzed synthesis of alkenyl halides has been developed via direct carbon-carbon bond formation by using benzyl halides and arylalkynes. [source] Copper Nanoparticles on Charcoal for Multicomponent Catalytic Synthesis of 1,2,3-Triazole Derivatives from Benzyl Halides or Alkyl Halides, Terminal Alkynes and Sodium Azide in Water as a "Green" SolventADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 1-2 2009Hashem Sharghi Abstract A one-pot procedure for synthesis of 1,2,3-triazole derivatives via the three-component coupling (TCC) reaction between terminal alkynes, benzyl or alkyl halides, and sodium azide in the presences of 1,mol% nanoparticles copper/carbon (Cu/C) catalyst has been developed. The catalyst showed high catalytic activity and 1,4-regioselectivity for the [3+2],Huisgen cycloaddition in water as a "green" solvent and good to excellent yields were obtained in all cases. This procedure eliminates the need to handle organic azides, and they are generated in situ. The reaction has a broad scope and is especially practical for the synthesis of new azacrown ether and anthraquinone derivatives of triazole. The heterogeneous catalysts were fully characterized by scanning electron microscopy (SEM), atomic forced microscopy (AFM), X-ray diffraction (XRD), inductively coupled plasma (ICP) analysis and FT-IR experimental techniques. The catalyst was recycled ten times without significant loss of activity. [source] ChemInform Abstract: One-Pot Amide Synthesis from Allyl or Benzyl Halides and Amines by Pd-Catalyzed Carbonylation.CHEMINFORM, Issue 14 2010Luigino Troisi 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: Exceptionally Simple Catalytic System for the Carbonylation of Benzyl Halides.CHEMINFORM, Issue 6 2010Albert L. Lapidus 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: Operationally Simple Copper-Promoted Coupling of Terminal Alkynes with Benzyl Halides.CHEMINFORM, Issue 39 2009Katherine A. 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 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 3-Alkyl-1H-quinolin-2-ones via Palladium-Catalyzed Intramolecular Cyclization of Benzyl Halides and ,,,-Unsaturated Amides.CHEMINFORM, Issue 44 2008Zhangqin Liu 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] Unexpected Tandem Sonogashira,Carbopallation,Sonogashira Coupling Reaction of Benzyl Halides with Terminal Alkynes: A Novel Four-Component Domino Sequence to Highly Substituted Enynes.CHEMINFORM, Issue 47 2004Laurent Romain Pottier Abstract For Abstract see ChemInform Abstract in Full Text. [source] Highly Substituted Enynes via a Palladium-Catalyzed Tandem Three Carbon,Carbon Bonds Forming Reaction Procedure from Benzyl Halides and Alkynyl Tributyltin Reagents.CHEMINFORM, Issue 35 2004Laurent Romain Pottier Abstract For Abstract see ChemInform Abstract in Full Text. [source] Solid Phase Oxidation of Alcohols and Benzyl Halides to Carbonyls Using Bromate Exchange Resin.CHEMINFORM, Issue 50 2003Atul Pd. Abstract For Abstract see ChemInform Abstract in Full Text. [source] Electrocarboxylation of Benzyl Halides through Redox Catalysis on the Preparative ScaleCHEMISTRY - A EUROPEAN JOURNAL, Issue 28 2006Onofrio Scialdone Dr. Abstract The electrocarboxylation of benzyl halides to the corresponding carboxylic acids through homogeneous charge-transfer catalysis was investigated both theoretically and experimentally to determine the influence of the operative parameters on the yield of the process and on the catalyst consumption. Theoretical considerations, based on fast kinetics of redox catalysis, were confirmed by the electrocarboxylation of 1-phenyl-1-chloroethane catalyzed by 1,3-benzenedicarboxylic acid dimethyl ester performed at a carbon cathode under different operative conditions. We obtained high yields of the target carboxylic acid and experienced a low catalyst consumption by operating with optimized [RX]bulk/[CO2]bulk and [RX]bulk/[catalyst] ratios. [source] Pronounced Catalytic Effect of a Micellar Solution of Sodium Dodecyl Sulfate (SDS) on the Efficient C-S Bond Formation via an Odorless Thia-Michael Addition Reaction through the in situ Generation of S -Alkylisothiouronium SaltsADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 5 2009Habib Firouzabadi Abstract A pronounced catalytic effect of sodium dodecyl sulfate (SDS) was observed on the in situ production of S -alkylisothiouronium salts via the reaction of primary, allyl and benzyl halides with thiourea in SDS droplets .Hydrolysis of the generated S -alkylisothiouronium salts in the palisade layer of the droplets produces the corresponding thiol moieties which are immediately added to the electron-deficient olefins that are present in the micellar core to produce the thia-Michael adducts. The entire route is an almost odorless process. The yields of the products are good to excellent and the method is applicable to large-scale operation without any problem. [source] A Mild and Efficient Iron-Catalyzed Synthesis of Alkenyl Halides via Direct Addition of Benzyl Halides to ArylalkynesADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 3 2009Zhongquan Liu Abstract An efficient and mild iron-catalyzed synthesis of alkenyl halides has been developed via direct carbon-carbon bond formation by using benzyl halides and arylalkynes. [source] Electrocarboxylation of Benzyl Halides through Redox Catalysis on the Preparative ScaleCHEMISTRY - A EUROPEAN JOURNAL, Issue 28 2006Onofrio Scialdone Dr. Abstract The electrocarboxylation of benzyl halides to the corresponding carboxylic acids through homogeneous charge-transfer catalysis was investigated both theoretically and experimentally to determine the influence of the operative parameters on the yield of the process and on the catalyst consumption. Theoretical considerations, based on fast kinetics of redox catalysis, were confirmed by the electrocarboxylation of 1-phenyl-1-chloroethane catalyzed by 1,3-benzenedicarboxylic acid dimethyl ester performed at a carbon cathode under different operative conditions. We obtained high yields of the target carboxylic acid and experienced a low catalyst consumption by operating with optimized [RX]bulk/[CO2]bulk and [RX]bulk/[catalyst] ratios. [source] | ||||||||||