دانلود مقالات ISI درباره Organocatalyst + ترجمه فارسی

Asymmetric Morita-Baylis-Hillman reactions of 2-cyclohexen-1-one catalyzed by chiral biaryl-based bis(thiourea) organocatalysts

Keywords: Organocatalyst; Allylic alcohol; Morita-Baylis-Hillman reaction; Bis(thiourea);

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2011 سفارش ترجمه

Organocatalytic synthesis of amides from nitriles via the Ritter reaction

Keywords: Pentafluorophenyl ammonium triflate; Organocatalyst; Alcohols; Nitrile;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2011 سفارش ترجمه

Thiourea dioxide (TUD): a robust organocatalyst for oxidation of sulfides to sulfoxides with TBHP under mild reaction conditions

Keywords: Organocatalyst; Thiourea dioxide; Oxidation; Sulfide;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2011 سفارش ترجمه

Chiral 1,2-diaminocyclohexane as organocatalyst for enantioselective aldol reaction

Keywords: Asymmetric aldol reaction; Diaminocyclohexane; Organocatalyst; Hydroxyketone;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2011 سفارش ترجمه

A recyclable fluorous thiourea organocatalyst for the chemoselective oxidation of sulfides

Keywords: Fluorous thiourea; Organocatalyst; Oxidation; Fluorous solid-phase extraction (F-SPE)

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2011 سفارش ترجمه

A highly enantioselective Diels-Alder reaction of 1,2-dihydropyridine using a simple β-amino alcohol organocatalyst for a practical synthetic methodology of oseltamivir intermediate

Keywords: β-Amino alcohol; Organocatalyst; Diels-Alder reaction; 1,2-Dihydropyridine; Isoquinuclidine;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2011 سفارش ترجمه

Highly effective and enantioselective Phospho-Aldol reaction of diphenyl phosphite with N-alkylated isatins catalyzed by quinine

Keywords: Quinine; Organocatalyst; Phospho-Aldol reaction; Diphenyl phosphite; N-alkylated isatins;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2011 سفارش ترجمه

Design of a stabilized short helical peptide and its application to catalytic enantioselective epoxidation of (E)-chalcone

Keywords: Peptide; Helix; X-ray crystallographic analysis; Organocatalyst; Enantioselective epoxidation;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2011 سفارش ترجمه

Novel chiral hydrogen bond donor catalysts based on a 4,5-diaminoxanthene scaffold: application to enantioselective conjugate addition of 1,3-dicarbonyl compounds to nitroalkenes

Keywords: Asymmetric synthesis; Bifunctional catalyst; Conjugate addition; Hydrogen bond donor catalyst; Organocatalyst; Xanthene scaffold;

دانلود رایگان متن کامل مقاله ISI 5 صفحه سال انتشار : 2011 سفارش ترجمه

Organocatalytic asymmetric synthesis of quinine and quinidine

Keywords: Organocatalyst; Asymmetric synthesis; Cycloaldolization; Total synthesis; Cinchona alkaloids;

دانلود رایگان متن کامل مقاله ISI 5 صفحه سال انتشار : 2011 سفارش ترجمه

Squaric acid as an impressive organocatalyst for Michael addition in water

Keywords: Amine; Thiol; Organocatalyst; Squaric acid; Michael addition; Green chemistry

دانلود رایگان متن کامل مقاله ISI 5 صفحه سال انتشار : 2011 سفارش ترجمه

Quinidine thiourea-catalyzed enantioselective synthesis of β-nitrophosphonates: beneficial effects of molecular sieves

Keywords: Nitrophosphonates; Organocatalyst; Thiourea; Molecular sieves; Enantioselective synthesis;

دانلود رایگان متن کامل مقاله ISI 6 صفحه سال انتشار : 2011 سفارش ترجمه

Direct asymmetric aldol reactions in brine with recyclable fluorous β-aminosulfonamide organocatalysts

Keywords: Fluorous; Organocatalyst; Aldol; Water; Recycle;

دانلود رایگان متن کامل مقاله ISI 7 صفحه سال انتشار : 2011 سفارش ترجمه

C3-Symmetric chiral trisimidazoline: the role of a third imidazoline and its application to the nitro Michael reaction and the α-amination of β-ketoesters

Keywords: C3-Symmetry; Imidazoline; Organocatalyst; Asymmetric reaction;

دانلود رایگان متن کامل مقاله ISI 7 صفحه سال انتشار : 2011 سفارش ترجمه

Asymmetric synthesis of multi-substituted spiro[5,5]undecane-1,5,9-triones via organocatalytic three-component reaction

Keywords: Asymmetric catalysis; Domino reaction; Organocatalyst; Three-component;

دانلود رایگان متن کامل مقاله ISI 7 صفحه سال انتشار : 2011 سفارش ترجمه

Organocatalytic synthesis of temperature-sensitive degradable PNiPAAm-b-PTMC block copolymers and micellar characterizations

Keywords: Organocatalyst; Amphiphilic; Temperature-sensitive; Poly(trimethylene carbonate); Micelle;

دانلود رایگان متن کامل مقاله ISI 8 صفحه سال انتشار : 2011 سفارش ترجمه

Synthesis of a novel one-handed helical poly(phenylacetylene) bearing poly(l-lactide) side chains

Keywords: Living ring-opening polymerization; Organocatalyst; Poly(l-lactide) macromonomer; Rhodium catalyst; Poly(phenylacetylene); Optical activity

دانلود رایگان متن کامل مقاله ISI 8 صفحه سال انتشار : 2011 سفارش ترجمه

Asymmetric organocatalytic reactions of o-hydroxycinnamaldehydes with organoboronic acids: a facile enantioselective access to chromanes and dihydrobenzopyranes

Keywords: Organocatalyst; 1,4-Addition; Organoboronic acid; Chromane; Dihydrobenzopyrane;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2010 سفارش ترجمه

Facile route to benzils from aldehydes via NHC-catalyzed benzoin condensation under metal-free conditions

Keywords: N-Heterocyclic carbene; Benzil; Benzoin; Oxidation; Organocatalyst;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2010 سفارش ترجمه

PEG-embedded thiourea dioxide (PEG.TUD) as a novel organocatalyst for the highly efficient synthesis of 3,4-dihydropyrimidinones

Keywords: Host-guest complex; Organocatalyst; Thiourea; Biginelli; Green method;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2010 سفارش ترجمه

Pyrrolidine-ureas as bifunctional organocatalysts for asymmetric Michael addition of ketone to nitroalkenes: unexpected hydrogen bonding effect

Keywords: Pyrrolidine-urea; Bifunctional; Organocatalyst; Michael addition; Nitroalkene;

دانلود رایگان متن کامل مقاله ISI 5 صفحه سال انتشار : 2010 سفارش ترجمه

One-step, synthesis of Hantzsch esters and polyhydroquinoline derivatives using new organocatalyst

Keywords: Organocatalyst; Four-component coupling reactions; Polyhydroquinoline

دانلود رایگان متن کامل مقاله ISI 5 صفحه سال انتشار : 2010 سفارش ترجمه

Virtual screening prediction of new potential organocatalysts for direct aldol reactions

Keywords: Aldol reaction; Asymmetric catalysis; Organocatalyst; Support vector machine; Virtual screening

دانلود رایگان متن کامل مقاله ISI 5 صفحه سال انتشار : 2010 سفارش ترجمه

One-pot synthesis of chiral bicyclo[3.3.0]octatrienes using diphenylprolinol silyl ether-mediated ene-type reaction

Keywords: Organocatalyst; Asymmetric reaction; One-pot reaction; ene-Reaction;

دانلود رایگان متن کامل مقاله ISI 6 صفحه سال انتشار : 2010 سفارش ترجمه

l-Proline-catalyzed one-pot expeditious synthesis of highly substituted pyridines at room temperature

Keywords: l-Proline; Substituted pyridines; Room temperature; Organocatalyst;

دانلود رایگان متن کامل مقاله ISI 6 صفحه سال انتشار : 2010 سفارش ترجمه

Melamine tri-silsesquioxane bridged periodic mesoporous organosilica as an efficient metal-free catalyst for CO2 activation

Keywords: CO2 utilization; Heterogeneous catalyst; Hybrid nanoporous materials; Organocatalyst

دانلود رایگان متن کامل مقاله ISI 6 صفحه سال انتشار : 2010 سفارش ترجمه

An efficient organocatalyzed multicomponent synthesis of diarylmethanes via Mannich type Friedel-Crafts reaction

Keywords: Organocatalyst; Friedel-Crafts reaction; Diarylmethane derivatives; Multicomponent reaction;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2009 سفارش ترجمه

C2-Symmetric bipyrrolidines as organocatalysts for asymmetric Diels-Alder reactions

Keywords: Bipyrrolidines; C2-Symmetry; Organocatalyst; Diels-Alder reaction;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2009 سفارش ترجمه

Synthesis of new functionalized chiral ionic liquid and its organocatalytic asymmetric epoxidation in water

Keywords: Functionalized chiral ionic liquid; Organocatalyst; Epoxidation; Water; Recycle; Green asymmetric synthesis

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2009 سفارش ترجمه

Organocatalytic activity of 4-hydroxy-prolinamide alcohol with different noncovalent coordination sites in asymmetric Michael and direct aldol reactions

Keywords: Organocatalyst; 4-Hydroxy-prolinamide alcohol; Michael reaction; Aldol reaction; DFT calculations;

دانلود رایگان متن کامل مقاله ISI 5 صفحه سال انتشار : 2009 سفارش ترجمه

Synthesis of secondary α-perfluoroalkyl- and tertiary α,α-bis(perfluoroalkyl)-N-methylprolinols and their catalytic activities in the acyl transfer reaction

Keywords: Trifluoromethyl; Organocatalyst; Effect of the trifluoromethyl group

دانلود رایگان متن کامل مقاله ISI 5 صفحه سال انتشار : 2009 سفارش ترجمه

Reagent-controlled diastereoselective synthesis of (2S,3R)- and (2R,3R)-2,3-diaminobutanoic acid derivatives using proline-catalyzed α-hydrazination reaction

Keywords: Diaminobutanoic acid; Alanine; Proline; Organocatalyst; Asymmetric synthesis; α-Hydrazination;

دانلود رایگان متن کامل مقاله ISI 6 صفحه سال انتشار : 2009 سفارش ترجمه

Enantioselective synthesis of functionalized 3,4-dihydropyran derivatives organocatalyzed by a novel fluorinated-diphenylprolinolether

Keywords: Pyrans; Fluorinated diphenylprolinolether; Organocatalyst; Domino reactions;

دانلود رایگان متن کامل مقاله ISI 6 صفحه سال انتشار : 2009 سفارش ترجمه

l-Proline catalyzed multicomponent reaction of 3,4-dihydro-(2H)-pyran, urea/thiourea, and aldehydes: diastereoselective synthesis of hexahydropyrano pyrimidinones (thiones)

Keywords: Multicomponent reaction; Organocatalyst; Biginelli reaction; L-Proline; Hexahydropyrano pyrimidinones; N-Acyliminium ion;

دانلود رایگان متن کامل مقاله ISI 7 صفحه سال انتشار : 2009 سفارش ترجمه

Theoretical studies of stereoselectivities in the direct organocatalytic Mannich reactions involving ketimine

Keywords: Mannich reaction; Organocatalyst; Secondary amine; Ketimine; Transition structure

دانلود رایگان متن کامل مقاله ISI 8 صفحه سال انتشار : 2009 سفارش ترجمه

Theoretical studies of stereoselectivities in the direct anti-Mannich and syn-aldol reactions catalyzed by axially chiral amino sulfonamide

Keywords: Syn-aldol; Anti-Mannich; Organocatalyst; Amino sulfonamide; Transition structure

دانلود رایگان متن کامل مقاله ISI 9 صفحه سال انتشار : 2009 سفارش ترجمه

Organocatalytic asymmetric 1,4-addition of organoboronic acids to γ-hydroxy α,β-unsaturated aldehyde: facile synthesis of chiral β-substituted γ-lactones

Keywords: Organocatalyst; Asymmetric 1,4-addition; Organoboronic acid; γ-Lactol; γ-Lactone;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2008 سفارش ترجمه

Organocatalytic synthesis of α-hydroxy and α-aminophosphonates

Keywords: Organocatalyst; α-Hydroxy phosphonate; Solvent-free; α-Aminophosphonates;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2008 سفارش ترجمه

A recyclable non-immobilized siloxy serine organocatalyst for the asymmetric direct aldol reaction

Keywords: Direct asymmetric aldol; Ionic liquid; Organocatalyst; Recyclable;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2008 سفارش ترجمه

Polystyrene-immobilized pyrrolidine as a highly stereoselective and recyclable organocatalyst for asymmetric Michael addition of cyclohexanone to nitroolefins

Keywords: Polystyrene-immobilized pyrrolidine; Organocatalyst; Asymmetric Michael addition; Cyclohexanone; Nitroolefins;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2008 سفارش ترجمه

N-Heterocyclic carbene-catalyzed dehydration of α,ω-disilanol oligomers

Keywords: N-Heterocyclic carbenes; Silicones; Organocatalyst; Polycondensation

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2008 سفارش ترجمه

Synthesis of enantiomerically enriched secondary and tertiary phenylthio- and phenoxy-aldols

Keywords: Organocatalyst; Asymmetric reaction; Aldol reaction; Proline;

دانلود رایگان متن کامل مقاله ISI 5 صفحه سال انتشار : 2008 سفارش ترجمه

Organocatalysed three-component domino synthesis of 1,4-dihydropyridines under solvent free conditions

Keywords: Organocatalyst; Multi-component; 1,4-Dihydropyridines; Domino synthesis; Solvent free;

دانلود رایگان متن کامل مقاله ISI 6 صفحه سال انتشار : 2008 سفارش ترجمه

N,N′-Bis(benzamido)thioureas as anion receptors

Keywords: Amidothiourea; Anion receptor; Organocatalyst; Hydrogen bonding; Charge transfer; Allosterism

دانلود رایگان متن کامل مقاله ISI 6 صفحه سال انتشار : 2008 سفارش ترجمه

Proline-based dipeptides with two amide units as organocatalyst for the asymmetric aldol reaction of cyclohexanone with aldehydes

Keywords: Dipeptide; Aldol reaction; Organocatalyst; Enantioselectivity;

دانلود رایگان متن کامل مقاله ISI 7 صفحه سال انتشار : 2008 سفارش ترجمه

Thiourea-catalyzed Morita-Baylis-Hillman reaction

Keywords: Bis-thiourea; Organocatalyst; Morita-Baylis-Hillman; Enantioselective reaction;

دانلود رایگان متن کامل مقاله ISI 7 صفحه سال انتشار : 2008 سفارش ترجمه

anti-Selective direct asymmetric Mannich reactions catalyzed by chiral pyrrolidine-based amino sulfonamides

Keywords: Mannich reaction; Organocatalyst; Asymmetric synthesis; Enamine catalysis;

دانلود رایگان متن کامل مقاله ISI 7 صفحه سال انتشار : 2008 سفارش ترجمه

Inherently chiral calix[4]arene-based bifunctional organocatalysts for enantioselective aldol reactions

Keywords: Inherently chiral calix[4]arene; Organocatalyst; Enantioselective aldol reaction;

دانلود رایگان متن کامل مقاله ISI 8 صفحه سال انتشار : 2008 سفارش ترجمه

Enantioselective synthesis of martinelline chiral core and its diastereomer using asymmetric tandem Michael-aldol reaction

Keywords: Martinelline; Martinellic acid; Tandem Michael-aldol reaction; Organocatalyst; Asymmetric synthesis;

دانلود رایگان متن کامل مقاله ISI 12 صفحه سال انتشار : 2008 سفارش ترجمه

A convenient aminolysis of esters catalyzed by 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) under solvent-free conditions

Keywords: Aminolysis; TBD; Organocatalyst; Solvent-free conditions;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2007 سفارش ترجمه