دانلود مقالات ISI درباره Diastereoselectivity + ترجمه فارسی

[4+2] Cyclization reactions of chiral Cβ-substituted Fischer alkenyl carbene complexes: efficient synthesis of enantiopure cyclohexenone and norbornene derivatives

Keywords: Carbene complexes; Chiral pool; Diastereoselectivity; [4+2] Cyclization;

دانلود رایگان متن کامل مقاله ISI 6 صفحه سال انتشار : 2007 سفارش ترجمه

One-pot synthesis of conformationally restricted spirooxindoles

Keywords: Spirooxindoles; Sequential metalations; Diastereoselectivity; DFT calculations;

دانلود رایگان متن کامل مقاله ISI 6 صفحه سال انتشار : 2007 سفارش ترجمه

A highly stereocontrolled formal total synthesis of (±)- and of (−)-grandisol by 1,4-conjugated addition of organocopper reagents to cyclobutylidene derivatives

Keywords: Carbocycles; Cuprates; Diastereoselectivity; Pheromones;

دانلود رایگان متن کامل مقاله ISI 7 صفحه سال انتشار : 2007 سفارش ترجمه

A convenient approach to δ-amino-β-ketoesters by vinylogous Mannich reaction of masked acetoacetates

Keywords: Mannich reaction; Imines; Aldehydes; Silicon tetrachloride; Nucleophilic addition; Diastereoselectivity;

دانلود رایگان متن کامل مقاله ISI 7 صفحه سال انتشار : 2007 سفارش ترجمه

Theoretical study of solvent effect on diastereoselectivity in protonation of methyl 3-fluorobutanoate anion by ethanol: Application of the 3D-RISM theory

Keywords: Diastereoselectivity; EFOE model; 3D-RISM theory;

دانلود رایگان متن کامل مقاله ISI 8 صفحه سال انتشار : 2007 سفارش ترجمه

Enantiodifferentiation in protonation processes: A theoretical study

Keywords: Diastereoselectivity; Ab initio calculations; DFT calculations; QTAIM; NBO;

دانلود رایگان متن کامل مقاله ISI 8 صفحه سال انتشار : 2007 سفارش ترجمه

A tandem cyclization and hydrogenation of (±)-citronellal to menthol over bifunctional Ni/Zr-beta and mixed Zr-beta and Ni/MCM-41

Keywords: Zr-beta; Bifunctional catalyst; Nickel; Rhodium; (±)-Citronellal; (±)-Menthol; Diastereoselectivity

دانلود رایگان متن کامل مقاله ISI 10 صفحه سال انتشار : 2007 سفارش ترجمه

Computational investigation of mechanistic aspects of the alkylation of chiral enamines

Keywords: Michael reaction; Chiral imines; Diastereoselectivity; Transition state calculation; Conformational analysis;

دانلود رایگان متن کامل مقاله ISI 10 صفحه سال انتشار : 2007 سفارش ترجمه

Palladium-catalyzed regio- and diastereo-selective allylic alkylation using 2-(diphenylphosphino)benzoic acid: construction of vicinal quaternary and tertiary carbon centers

Keywords: Palladium; Catalyst; Diastereoselectivity; Regioselectivity; Quaternary carbon center;

دانلود رایگان متن کامل مقاله ISI 10 صفحه سال انتشار : 2007 سفارش ترجمه

The synthesis of 2-, 3-, 4- and 6-O-α-d-glucopyranosyl-d-galactopyranose, and their evaluation as nutritional supplements for pre-term infants

Keywords: Disaccharides; Synthesis; Diastereoselectivity; Halide catalysis; Lactose; Supplement; Nutritional; Infants; Pre-term

دانلود رایگان متن کامل مقاله ISI 12 صفحه سال انتشار : 2007 سفارش ترجمه

Enantiomer-differentiating hydrogenation of methyl 3-cyclopropyl-2-methyl-3-oxopropanoate over tartaric acid-modified nickel: Performance of heterogeneous catalyst in dynamic kinetic resolution

Keywords: Tartaric acid-modified nickel; Hydrogenation; Dynamic kinetic resolution; Enantiomer differentiation; Diastereoselectivity

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2006 سفارش ترجمه

Diastereoselectivity in the alkylation of 4-fluoroproline methyl esters

Keywords: Diastereoselectivity; Proline derivatives; Fluorinated organic compounds; Alkylation;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2006 سفارش ترجمه

The influence of electrogenerated Sm(II), electrogenerated Yb(II), and magnesium ions produced at a sacrificial magnesium anode, upon the diastereoselectivity of electroreductive cyclization reactions

Keywords: Diastereoselectivity; Electroreductive cyclization; Influence of ions; Sacrificial anode; Lanthanides (Sm and Yb)

دانلود رایگان متن کامل مقاله ISI 5 صفحه سال انتشار : 2006 سفارش ترجمه

An efficient stereoselective synthesis of (2S,3S)-3-hydroxypipecolic acid using chlorosulfonyl isocyanate

Keywords: Chlorosulfonyl isocyanate; 3-Hydroxypipecolic acid; Amination; Diastereoselectivity;

دانلود رایگان متن کامل مقاله ISI 5 صفحه سال انتشار : 2006 سفارش ترجمه

Exploiting catalyst characteristics: A protocol for increasing diastereoselectivity in a double ring-closing metathesis reaction

Keywords: Diastereoselectivity; Ring-closing metathesis; Catalyst

دانلود رایگان متن کامل مقاله ISI 7 صفحه سال انتشار : 2006 سفارش ترجمه

Stereoselective carbonyl reductions of chloro-substituted 8-oxabicyclo[3.2.1]oct-6-en-3-ones

Keywords: Haloketones; Halohydrines; Reduction; Hydrides; Diastereoselectivity; Heterocycles; X-ray diffraction;

دانلود رایگان متن کامل مقاله ISI 7 صفحه سال انتشار : 2006 سفارش ترجمه

Diastereoselective alkylation of iminomethylenephosphinates possessing an asymmetric center at the phosphorus atom

Keywords: α-Amino-H-phosphinates; Phosphorus; Alkylations; Diastereoselectivity;

دانلود رایگان متن کامل مقاله ISI 8 صفحه سال انتشار : 2006 سفارش ترجمه

The effect of solvent on the stereoselectivity of reactions between hydroxyalkyl azides and ketones

Keywords: Diastereoselectivity; Schmidt reaction; Cation-π interactions; CPCM;

دانلود رایگان متن کامل مقاله ISI 8 صفحه سال انتشار : 2006 سفارش ترجمه

Novel bicyclisation of unsaturated polyols in PdCl2–CuCl2–AcOH catalytic system

Keywords: Palladium(II)-catalysis; Diastereoselectivity; Substrate selectivity; Bicyclisation; Semiempirical calculations

دانلود رایگان متن کامل مقاله ISI 13 صفحه سال انتشار : 2006 سفارش ترجمه

Synthesis and structure of 3,4,5,6-tetrahydro-8-hydroxy-1H,6H-naphtho-[1,2-h]pyrrolo[2,1-e][1,3,6,2]dioxazaboronin-6-one dimer

Keywords: β-Naphthol; L-Proline; Boron; Diastereoselectivity; Crystal structure;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2005 سفارش ترجمه

Unexpected 1,2 syn diastereoselectivity in the three-component 'aza Sakurai-Hosomi' reaction

Keywords: Sakurai-Hosomi reaction; Three-component reaction; Allylsilane; Homoallylamine; Diastereoselectivity;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2005 سفارش ترجمه

Diastereoselective formation of highly functionalised α-substituted amino acid derivatives via aldol addition

Keywords: Aldol; Myriocin; Diastereoselectivity;

دانلود رایگان متن کامل مقاله ISI 6 صفحه سال انتشار : 2005 سفارش ترجمه

Nitroaldol-reaction of aldehydes in the presence of non-activated Mg:Al 2:1 hydrotalcite; a possible new mechanism for the formation of 2-aryl-1,3-dinitropropanes

Keywords: Hydrotalcite; Henry reaction; 1,3-Dinitropropanes; Mechanism; Diastereoselectivity;

دانلود رایگان متن کامل مقاله ISI 7 صفحه سال انتشار : 2005 سفارش ترجمه

Diastereoselective hydrogenation of a cyclic β-ketoformyl derivative on supported metal catalysts

Keywords: Diastereoselectivity; Hydrogenation; Platinum; Ruthenium; Supported catalysts;

دانلود رایگان متن کامل مقاله ISI 7 صفحه سال انتشار : 2005 سفارش ترجمه

Solvation-dependent diastereofacial selectivity: addition of lithioacetonitrile to 2-phenyl propanal

Keywords: Solvent effect; Temperature effect; Acetonitrile anion; Aldehyde; Diastereoselectivity;

دانلود رایگان متن کامل مقاله ISI 7 صفحه سال انتشار : 2005 سفارش ترجمه

Diastereo- and regioselectivity in Diels-Alder reaction of [1,4,2]diazaphospholo[4,5-a]pyridines

Keywords: Diels-Alder reaction; Azaphospholes; Diastereoselectivity; Regioselectivity; DFT calculations;

دانلود رایگان متن کامل مقاله ISI 8 صفحه سال انتشار : 2005 سفارش ترجمه

Diastereoselectivity in addition of nitrile-stabilized carbanions to Schiff bases and in subsequent alkylation reactions

Keywords: Tandem reactions; Aldol addition; Schiff bases; Alkylation; Diastereoselectivity; Nitrile-stabilized carbanions;

دانلود رایگان متن کامل مقاله ISI 11 صفحه سال انتشار : 2005 سفارش ترجمه

Alkyl-rhodium transition state stabilities as a tool to predict regio- and stereoselectivity in the hydroformylation of chiral substrates

Keywords: Regioselectivity; Diastereoselectivity; Unmodified rhodium catalysts; Theoretical investigation

دانلود رایگان متن کامل مقاله ISI 12 صفحه سال انتشار : 2005 سفارش ترجمه

Stereoselective synthesis of N-protected pyrrolidines via Pd-catalyzed reactions of γ-(N-acylamino) alkenes and γ-(N-Boc-amino) alkenes with aryl bromides

Keywords: Stereoselective synthesis; Pyrrolidines; Diastereoselectivity; Palladium; Arylhalide;

دانلود رایگان متن کامل مقاله ISI 13 صفحه سال انتشار : 2005 سفارش ترجمه

The effect of fluoromethyl groups on the diastereoselectivity in the electrophilic alkylation

Keywords: Diastereoselectivity; Electrophilic alkylation;

دانلود رایگان متن کامل مقاله ISI 13 صفحه سال انتشار : 2005 سفارش ترجمه

Chiral teleinduction in the polymerization of isocyanides

Keywords: Chirality induction; Circular dichroism; Diastereoselectivity;

دانلود رایگان متن کامل مقاله ISI 15 صفحه سال انتشار : 2005 سفارش ترجمه

Synthesis of polypropionate subunits from cyclopropanes

Keywords: Cyclopropanes; Diastereoselectivity; Ring opening; Electrophilic additions; Mercury;

دانلود رایگان متن کامل مقاله ISI 22 صفحه سال انتشار : 2005 سفارش ترجمه