دانلود مقالات ISI درباره Diastereoselectivity + ترجمه فارسی

Diastereoselective allylic rearrangement of Morita-Baylis-Hillman C-adducts: a facile access to functionalized 1, 2-dihydroisoquinolines

Keywords: Rearrangement; Dihydroisoquinoline; Diastereoselectivity;

دانلود رایگان متن کامل مقاله ISI 8 صفحه سال انتشار : 2015 سفارش ترجمه

Enantioselective aza-Henry reaction for the synthesis of (S)-levamisole using efficient recyclable chiral Cu(II)–amino alcohol derived complexes

Keywords: Asymmetric Catalysis; Enantioselectivity; Diastereoselectivity; Asymmetric aza-Henry reaction

دانلود رایگان متن کامل مقاله ISI 9 صفحه سال انتشار : 2015 سفارش ترجمه

Tandem stereoselective synthesis of new trifluoromethylated pyranopyrazoles

Keywords: Pyrazolones; Tandem reaction; Trifluoromethylated pyranopyrazoles; Diastereoselectivity; Synthesis

دانلود رایگان متن کامل مقاله ISI 9 صفحه سال انتشار : 2015 سفارش ترجمه

Diastereoselective synthesis of spirooxindole derivatives via biocatalytic domino reaction

Keywords: Spirooxindole; Acylase; Domino reaction; Diastereoselectivity;

دانلود رایگان متن کامل مقاله ISI 16 صفحه سال انتشار : 2015 سفارش ترجمه

One-pot asymmetric reductive amination of ketones induced by polyfluoroalkanesulfinamide

Keywords: 2-Chloro-1,1,2,2-tetrafluoroethane-1-sulfinamide; Ketimine; Ketone; Reductive amination; Diastereoselectivity;

دانلود رایگان متن کامل مقاله ISI 18 صفحه سال انتشار : 2015 سفارش ترجمه

An update on the stereoselective synthesis of α-aminophosphonic acids and derivatives

Keywords: α-Aminophosphonic acids; α-Aminophosphonates; Stereoselective synthesis; Three-component reaction; ABSA; 4-acetamidobenzenesulfonyl azide; Abu; aminobutyric acid; Ac; acetyl; ACE; angiotensin-converting enzyme; Ala; alanine; Ar; aryl; BINAP; 2,2′-bis(

دانلود رایگان متن کامل مقاله ISI 43 صفحه سال انتشار : 2015 سفارش ترجمه

Asymmetric synthesis of β′-amino-α,β-enones via addition of α,β-unsaturated ketone-derived enolates to chiral N-phosphonyl imines

Keywords: N-Phosphonyl imine; α,β-Unsaturated ketone; Asymmetric Mannich reaction; β′-Amino-α,β-enones; Diastereoselectivity;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2014 سفارش ترجمه

Copper(II)-acid catalyzed cyclopropanation of 1,3-dienamides by electrophilic activation of α-aryl diazoesters

Keywords: Cycloaddition; Diazo compound; Alkene; Diastereoselectivity; Regioselectivity;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2014 سفارش ترجمه

Synthesis of the all-cis-trimethyldecalin fragment of unusual terpenes by radical-mediated protonolysis of an alkylboron derivative

Keywords: Organoboranes; Protonolysis; Diastereoselectivity; Radical reduction; H-transfer; Terpenes;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2014 سفارش ترجمه

A novel and diastereoselective construction of H-pyrazolo[3,2-a]isoquinoline fused spirooxindoles via [3+2] cycloaddition

Keywords: Cycloaddition; Diastereoselectivity; Spirooxindole; Pyrazoloisoquinoline;

دانلود رایگان متن کامل مقاله ISI 5 صفحه سال انتشار : 2014 سفارش ترجمه

Direct synthesis of C3-mono-functionalized oxindoles from N-unprotected 2-oxindole and their antileishmanial activity

Keywords: Oxindoles; Michael addition; Cyclization; Diastereoselectivity; Leishmanicidal activity; Leishmania;

دانلود رایگان متن کامل مقاله ISI 7 صفحه سال انتشار : 2014 سفارش ترجمه

Highly diastereoselective 1,2-dichlorination of glycals using NCS/PPh3: study of substituent and solvent effects

Keywords: 1,2-Dichlorination; Glycals; Diastereoselectivity; Chlorophosphonium ion; Solvent effects;

دانلود رایگان متن کامل مقاله ISI 7 صفحه سال انتشار : 2014 سفارش ترجمه

Cu-promoted single-pot intramolecular esterification of C-3 functionalized azetidin-2-one: an efficient diastereoselective access to azido-/amino-aza-lactones

Keywords: Aza-lactones; Diastereoselectivity; β-Lactam synthon approach; Functionalized azetidin-2-ones; Intramolecular amidolysis;

دانلود رایگان متن کامل مقاله ISI 7 صفحه سال انتشار : 2014 سفارش ترجمه

En-route to scarce furo[3,2-f]indolizidines, -indolizidin-9-ols and their stable quaternary ammonium salts based on the stereoselective catalytic hydrogenation of furan nucleus

Keywords: Indolizidines; Indolizidinols; Catalytic hydrogenation; Regioselective reduction; Diastereoselectivity; Alkaloids;

دانلود رایگان متن کامل مقاله ISI 9 صفحه سال انتشار : 2014 سفارش ترجمه

A simple and facile method for regio- and stereoselective bromoformyloxylation and bromoacetoxylation of olefins using NH4Br and oxone®

Keywords: Alkenes; Cohalogenation; NH4Br; Oxone®; Regioselectivity; Diastereoselectivity;

دانلود رایگان متن کامل مقاله ISI 10 صفحه سال انتشار : 2014 سفارش ترجمه

Chemo and diastereoselective conjugate addition of Grignard reagents on parthenin, a bioactive natural sesquiterpene lactone

Keywords: Parthenin analogues; Grignard reagents; Mono nucleophilic addition; Chiral products; Diastereoselectivity;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2013 سفارش ترجمه

NMR analysis of photochromism of bisthiazolylindenols

Keywords: Photochromism; NMR spectroscopy; Diarylethenes; Diastereoselectivity; Solvent polarity;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2013 سفارش ترجمه

Diastereoselectivity of isoxazolidines obtained from α,α-diphenylprolinol trimethylsilyl ether-catalyzed three-component domino reactions

Keywords: 1,3-Dipolar cycloaddition; Cascade/domino reaction; Diastereoselectivity; Isoxazolidine; Reaction mechanism;

دانلود رایگان متن کامل مقاله ISI 5 صفحه سال انتشار : 2013 سفارش ترجمه

Chemical deracemization and (S) to (R) interconversion of some fluorine-containing α-amino acids

Keywords: Chiral recognition; Deracemization; d-(R)-amino acids; Resolution; Diastereoselectivity; Asymmetric induction;

دانلود رایگان متن کامل مقاله ISI 5 صفحه سال انتشار : 2013 سفارش ترجمه

Stereo- and regioselectivity in the P450-catalyzed oxidative tandem difunctionalization of 1-methylcyclohexene

Keywords: Enantioselectivity; CH-activation; P450; Monooxygenase; Diastereoselectivity;

دانلود رایگان متن کامل مقاله ISI 6 صفحه سال انتشار : 2013 سفارش ترجمه

2-Alkylidene-4-oxothiazolidine S-oxides: synthesis and stereochemistry

Keywords: 2-Alkylidene-4-oxothiazolidine; Sulfoxide; Diastereoselectivity; Density functional calculations; CH⋯O hydrogen bonds;

دانلود رایگان متن کامل مقاله ISI 12 صفحه سال انتشار : 2013 سفارش ترجمه

Inorganic–organic hybrid double sulfates as catalysts of the diastereoselective nitroaldol reaction

Keywords: Hybrid materials; Double salts; Crystal structures; Henry reaction; Diastereoselectivity

دانلود رایگان متن کامل مقاله ISI 5 صفحه سال انتشار : 2013 سفارش ترجمه

Hydrogen-bonding interactions, geometrical selectivity and spectroscopic properties of cobalt(III) complexes with unsymmetrical tridentate amine-amidato-phenolato type ligands

Keywords: Double hydrogen bonds; Amine-amidato type ligand; Geometrical isomers; Diastereoselectivity; Solvatochromism

دانلود رایگان متن کامل مقاله ISI 7 صفحه سال انتشار : 2013 سفارش ترجمه

An eco-compatible synthesis of medicinally important novel class of trispiroheterocyclic framework using 2,2,2-trifluoroethanol as a reusable medium

Keywords: Multicomponent reaction; 2,2,2-Trifluoroethanol; Trispiropyrrolidine/thiapyrrolizidine derivatives; Diastereoselectivity; Antimycobacterial activity

دانلود رایگان متن کامل مقاله ISI 7 صفحه سال انتشار : 2013 سفارش ترجمه

A study of photodegradation of drug rosuvastatin calcium in solid state and solution under UV and visible light irradiation: The influence of certain dyes as efficient stabilizers

Keywords: Rosuvastatin calcium; Photodegradation; Dihydrophenanthrene; Diastereoselectivity; Photoprotection

دانلود رایگان متن کامل مقاله ISI 9 صفحه سال انتشار : 2013 سفارش ترجمه

Molecular structures of dinuclear zinc(II) complexes of chiral tridentate imine and amine ligands: Effect of ligand geometry on diastereoselectivity

Keywords: Schiff base; Racemic mixture; Tridentate ligand; Hydrogen bonding; Self-assembly; Diastereoselectivity

دانلود رایگان متن کامل مقاله ISI 10 صفحه سال انتشار : 2013 سفارش ترجمه

Stereoselective tribromomethylation of N-(tert-butanesulfinyl)imines with bromoform: practical synthesis of α-tribromomethyl amines

Keywords: Amines; Tribromomethylation; Diastereoselectivity; Nucleophilic addition; Sulfinylimine;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2012 سفارش ترجمه

Modulating the stereochemical outcome of the Ireland-Claisen reaction of (E)- and (Z)-allylic glycolates

Keywords: Ireland-Claisen; Allylic glycolate; Silyl ketene acetal; Diastereoselectivity; Lewis acid;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2012 سفارش ترجمه

Synthesis and application of proline based organocatalyst for highly enantioselective aldol reaction by hydrogen bonding

Keywords: Aldol reaction; Diastereoselectivity; Enantioselectivity; Hydrogen bonding; Organocatalysis;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2012 سفارش ترجمه

Asymmetric addition of benzothiazole to N-tert-butanesulfinyl imine for the synthesis of chiral α-branched heteroaryl amines

Keywords: Asymmetric synthesis; Benzothiazole; Diarylmethylamine; Diastereoselectivity; N-tert-Butanesulfinyl imine;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2012 سفارش ترجمه

Simple and practical synthesis of pyrano- and furano[3,2-c]-quinoline derivatives under non-Lewis acid catalysis

Keywords: Non-Lewis acid; Catalysis; HCl–ethanol; Diastereoselectivity; Povarov reaction

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2012 سفارش ترجمه

Electronically unfavorable addition of electron-deficient olefins to isochromenylium tetrafluoroborates initiated by C-1 O-glycosylation

Keywords: Isochromenylium tetrafluoroborate; Michael addition; Aldol condensation; Cascade reaction; Diastereoselectivity;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2012 سفارش ترجمه

Controllable stereoselective synthesis of cis or trans pyrano and furano tetrahydroquinolines: Polyaniline-p-toluenesulfonate salt catalyzed one-pot aza-Diels–Alder reactions

Keywords: Polyaniline salt; Reusable catalyst; Diastereoselectivity; Green chemistry; Aza-Diels–Alder reaction

دانلود رایگان متن کامل مقاله ISI 5 صفحه سال انتشار : 2012 سفارش ترجمه

InBr3-catalyzed cyclization of glycosides with arylamines

Keywords: Glycosidation; Glycal; Glycoside; InBr3; Diastereoselectivity;

دانلود رایگان متن کامل مقاله ISI 5 صفحه سال انتشار : 2012 سفارش ترجمه

β-Lactam synthon-interceded diastereoselective synthesis of functionalized octahydroindole-based molecular scaffolds and their in vitro cytotoxic evaluation

Keywords: β-Lactam synthon protocol; Diastereoselectivity; Iodocyclization; Cytotoxicity; Octahydroindoles

دانلود رایگان متن کامل مقاله ISI 6 صفحه سال انتشار : 2012 سفارش ترجمه

From mannose to morphan analogues: methyl α-d-mannoside as chiral building block for the synthesis of mono- and bicyclic σ receptor ligands

Keywords: Mannose; Alloheptopyranosides; Diastereoselectivity; Bicyclic systems; Oxa-morphan; σ1 Receptor ligands;

دانلود رایگان متن کامل مقاله ISI 6 صفحه سال انتشار : 2012 سفارش ترجمه

Diastereoselectivity of the α,α-diphenylprolinol trimethylsilyl ether-catalyzed two-component domino reactions: toward cyclohexanes with six stereogenic centers

Keywords: Ab initio methods; Cascade/domino reaction; Density functional theory methods; Diastereoselectivity; Reaction mechanism;

دانلود رایگان متن کامل مقاله ISI 7 صفحه سال انتشار : 2012 سفارش ترجمه

Diastereoselectivity in dinuclear complexes of chiral tridentate ligands

Keywords: Schiff base; Racemic mixture; Diastereoselectivity; Dimetallic core

دانلود رایگان متن کامل مقاله ISI 9 صفحه سال انتشار : 2012 سفارش ترجمه

Facile synthesis of various substituted taurines, especially syn- and anti-1,2-disubstituted taurines, from nitroolefins

Keywords: Taurine; 2-Aminoalkanesulfonic acid; Nitroolefin; Nitroalkylthioacetate; Diastereoselectivity; IMFOZPNJBJFAQH-SSDOTTSWSA-N; LSSTXYLOZMCSPY-RXMQYKEDSA-N; BTAUDCYZWXUCOZ-LYNSQETBSA-N; ACKQNYOQTIMMMB-KIYNQFGBSA-N; CAMCFUCVQIPMNO-JAVCKPHESA-N; YPTUXBSIFZOUKX-

دانلود رایگان متن کامل مقاله ISI 10 صفحه سال انتشار : 2012 سفارش ترجمه

Difluoro(phenylchalcogen)methylation of aldehydes, ketones, and imines with S-, Se-, and Te-containing reagents PhXCF2H (X = S, Se, Te)

Keywords: (Phenylchalcogen)difluoromethylation; Fluorine; Difluoromethylation; Nucleophilic fluoroalkylation; Diastereoselectivity

دانلود رایگان متن کامل مقاله ISI 14 صفحه سال انتشار : 2012 سفارش ترجمه

Stereoselective photodimerization of alkyl 3-alkoxyl-2-naphthoates

Keywords: Chiral auxiliary strategy; Absolute configuration; Cubane-like photodimer; Diastereoselectivity;

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

Photolysis dynamics of diastereoselectivity in the photocyclization of o-ethoxybenzophenone and o-2,2,2-trifluoroethoxybenzophenone

Keywords: Diastereoselectivity; Biradical; Laser photolysis; Time-resolved spectroscopy; Fluorescence decay; Transient absorption;

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

Reductive coupling of (azulen-1-yl)carbonyl compounds by low-valent titanium; pinacol/pinacolone rearrangement versus pinacol and alkene generation

Keywords: 1-Acetylazulene; McMurry coupling; Pinacolic rearrangement; Diastereoselectivity;

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

l-Proline-catalysed three-component domino reactions for the diastereoselective synthesis of 5,6-disubstituted 3-thiomorpholinones

Keywords: Multicomponent reactions; Domino reactions; Mannich reaction; Organocatalysis; Diastereoselectivity; LPVUJLPZUVKXKZ-AEFFLSMTSA-N; XJJWCIFTJGPEPQ-WBVHZDCISA-N; UOKQGOMONGBNFG-AEFFLSMTSA-N;

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

Possible factors influencing the separation mechanism of diastereomeric amino acid derivatives obtained from s-triazine type reagents

Keywords: Diastereoselectivity; Diastereomer; Amino acids; Derivatives; Conformational equilibria; s-Triazine;

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

Synthesis of optically active trifluoromethyl substituted diaziridines and oxaziridines

Keywords: Amination; Diastereoselectivity; Small heterocycles;

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

Highly diastereoselective photochromic ring closure of bisbenzothienylethenes possessing dual fluorinated stereocontrollers

Keywords: Photochromism; Diarylethene; Diastereoselectivity; Allylic strain; Fluoroalkanoyl group; Electrocyclization

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

Diastereoselective synthesis of a “chiral-at-Ru” secondary phosphine complex

Keywords: Secondary phosphine complex; Ruthenium; Chiral-at-metal; Epimerization; Diastereoselectivity; NOESY NMR

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

Influence of the solvent in low temperature glycosylations with O-(2,3,5,6-tetra-O-benzyl-β-d-galactofuranosyl) trichloroacetimidate for 1,2-cis α-d-galactofuranosylation

Keywords: Glycosylation; Trichloroacetimidate; 1,2-Cis; Galactofuranose; Solvents effects; Diastereoselectivity;

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

Dioxomolybdenum(VI) complexes containing chiral oxazolines applied in alkenes epoxidation in ionic liquids: A highly diastereoselective catalyst

Keywords: Oxomolybdenum(VI) complexes; Oxazoline; Olefin epoxidation; Ionic liquids; Diastereoselectivity

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