个性化文献订阅>文章检索

文章名     作者     期刊名     摘要     卷     期         如果没有找到您所需要的文献，请点击 ——此处申请     共29条记录   Advancing Tetrazine Bioorthogonal Reactions through the Development of New Synthetic Tools [作者：DEVARAJ NEAL K,期刊：SYNLETT, 页码：2147-2152 , 文章类型： Article，,卷期：2012年-15] There has been increasing interest in the use of tetrazines as partners in bioorthogonal inverse Diels-Alder cycloadditions. Although tetrazine cycloadditions possess several characteristics that make them attractive com... Synthetic Potential of Configurationally Unstable Chiral Carbanions [作者：SASAKI MICHIKO; TAKEDA KEI,期刊：SYNLETT, 页码：2153-2164 , 文章类型： Article，,卷期：2012年-15] This account summarizes our recent efforts in exploring the synthetic potential of configurationally labile chiral carbanions next to electron-withdrawing groups that have previously been considered to be impossible even... The Application of [Bis(trifluoroacetoxy)iodo]benzene (PIFA) in the Synthesis of Nitrogen-Containing Heterocycles [作者：TELLITU IMANOL; DOMINGUEZ ESTHER,期刊：SYNLETT, 页码：2165-2175 , 文章类型： Article，,卷期：2012年-15] Direct oxidation of suitably functionalized amides by application of the hypervalent iodine reagent PIFA [bis(trifluoroacetoxy)iodo]benzene allows straightforward access to a variety of nitrogen-containing heterocycles. ... An Efficient Method for Reductive Amination of Carbonyl Compounds under Nonacidic Conditions [作者：HUDSON JULIAN A; SWEENEY J B,期刊：SYNLETT, 页码：2176-2178 , 文章类型： Article，,卷期：2012年-15] A high yielding reductive amination procedure for ketones and aldehydes under neutral conditions is described. The key advantage for the method is the applicability to acid-sensitive substrates, and the procedure is appl... Copper-Catalysed Multicomponent Click Synthesis of 5-Alkynyl 1,2,3-Triazoles under Ambient Conditions [作者：ALONSO FRANCISCO; MOGLIE YANINA; RADIVOY GABRIEL; YUS MIGUEL,期刊：SYNLETT, 页码：2179-2182 , 文章类型： Article，,卷期：2012年-15] Copper(I) oxide has been found to effectively catalyse the multicomponent click synthesis of fully substituted 5-alkynyl 1,2,3-triazoles from organic halides, sodium azide, and terminal alkynes in methanol under ambient ... Diversity-Oriented Approach to Macrocyclic Cyclophane Derivatives via Ring-Closing Metathesis [作者：KOTHA SAMBASIVARAO; SHIRBHATE MUKESH E,期刊：SYNLETT, 页码：2183-2188 , 文章类型： Article，,卷期：2012年-15] A short synthetic approach to the macrocyclic framework of longithorone C is described via ring-closing metathesis using the Grubbs 2nd generation catalyst. Regiospecific Normal Diels-Alder Reaction of trans-1,2-Biscoumarinylethenes [作者：SANAP KAILAS K; SAMANT SHRINIWAS D,期刊：SYNLETT, 页码：2189-2194 , 文章类型： Article，,卷期：2012年-15] The reaction of different 7,8-substituted coumarin 4-acetic acids with 7-diethylaminocoumarin-3-carbaldehyde in the presence of piperidine in methanol gives 1,2-biscoumarinylethenes. These compounds undergo regiospecific... Enantioselective Organocatalytic Thiol Addition to alpha,beta-Unsaturated alpha-Amino Acid Derivatives [作者：BREMAN ARJEN C; SMITS JAN M M; DE GELDER RENE; VAN MAARSEVEEN JAN H; INGEMANN STEEN; HIEMSTRA HENK,期刊：SYNLETT, 页码：2195-2200 , 文章类型： Article，,卷期：2012年-15] A new class of Michael acceptors based on alpha,beta-unsaturated amino acids has been prepared and applied in asymmetric organocatalysis. With the use of thiourea derivatives of cinchona alkaloid-derived catalysts, effic... Titanium(IV) Isopropoxide as an Efficient Catalyst for Direct Amidation of Nonactivated Carboxylic Acids [作者：LUNDBERG HELENA; TINNIS FREDRIK; ADOLFSSON HANS,期刊：SYNLETT, 页码：2201-2204 , 文章类型： Article，,卷期：2012年-15] Secondary and tertiary amides are formed in high yields, in an efficient and environmentally benign titanium(IV) isopropoxide catalyzed direct amidation of carboxylic acids with primary and secondary amines. Preparation and Reactivity of 3-Amino-2,4-dichloroquinoline [作者：SIMACEK ADAM; GREPL MARTIN; HRADILOVA LUDMILA; HRADIL PAVEL,期刊：SYNLETT, 页码：2205-2208 , 文章类型： Article，,卷期：2012年-15] A simple and efficient synthesis of 2-substituted 3-amino-4-chloroquinolines and 2,4-disubstituted 3-aminoquinolines was carried out by reacting 3-amino-2,4-dichloroquinoline with various oxygen-, sulfur-and nitrogen-con... A Greener Protocol for Accessing 2,3-Dihydro/spiroquinazolin-4(1H)-ones: Natural Acid-SDS Catalyzed Three-Component Reaction [作者：SHARMA RASHMI; PANDEY ANAND KUMAR; CHAUHAN PREM M S,期刊：SYNLETT, 页码：2209-2214 , 文章类型： Article，,卷期：2012年-15] A novel green and energy-efficient synthesis of 2,3-dihydro/spiroquinazolin-4(1H)-ones via three-component cyclo-condensation reaction involving isatoic anhydride, amines and aldehydes/ketones utilizing recyclable tartar... Copper-Catalyzed One-Pot Synthesis of Functionalized 1,4-Dihydroazete Derivatives from Sulfonyl Azides, Terminal Alkynes, and Tetramethylguanidine [作者：YAVARI ISSA; NEMATPOUR MANIJEH,期刊：SYNLETT, 页码：2215-2218 , 文章类型： Article，,卷期：2012年-15] Ketenimine intermediates generated by the addition of copper acetylides to sulfonyl azides are trapped by tetramethylguanidine to afford 1,4-dihydro-N,N-dimethyl-3-aryl(alkyl)-4-aryl(alkyl)sulfoniminoazet-2-amine derivat... A Novel System for the Synthesis of 2-Aminobenzthiazoles using Sodium Dichloroiodate [作者：TELVEKAR VIKAS N; BACHHAV HARSHAL M; BAIRWA VINOD KUMAR,期刊：SYNLETT, 页码：2219-2222 , 文章类型： Article，,卷期：2012年-15] 2-Aminobenzthiazole is a privileged scaffold with a range of biological activities. However, to date, an efficient protocol for the synthesis of this ring system using aniline as a starting material has been lacking. Her... Facile and Mild Displacement of Nitrite Ions in Electron-Deficient Nitroarenes by Alkyl or Aryl Thiols in the Presence of Magnesium Methoxide as a Solid Base Catalyst [作者：NAEIMI HOSSEIN; MORADIAN MOHSEN,期刊：SYNLETT, 页码：2223-2226 , 文章类型： Article，,卷期：2012年-15] The nucleophilic aromatic substitution reaction (SNAr) between nitroarenes (having electron-withdrawing groups in the ortho or para position), and alkyl- or arylthiols using magnesium methoxide as a solid base catalyst i... Furo[3,4-b]chromones, and not Pyrano[3,4-b]chromones, are Obtained by the Reaction of 3-Formylchromones with Isocyanides [作者：NEO ANA G; GARRIDO LEDA; DIAZ JESUS; MARCACCINI STEFANO; MARCOS CARLOS F,期刊：SYNLETT, 页码：2227-2230 , 文章类型： Article，,卷期：2012年-15] The reaction of formylchromones with alkyl isocyanides was reinvestigated. In earlier reports from other research groups, two different structures were proposed for the products of this reaction. Herein, we provide unamb... Some Practical Methods for the Application of 5-Metallo-1-benzyl-1H-tetrazoles in Synthesis [作者：WIEDEMANN SEAN H; BIO MATTHEW M; BROWN LIANE M; HANSEN KARL B; LANGILLE NEIL F,期刊：SYNLETT, 页码：2231-2236 , 文章类型： Article，,卷期：2012年-15] Nucleophilic reagents such as 5-lithiotetrazoles are synthetically powerful tools for the installation of tetrazole functional groups, but they are of limited utility due to the instability of tetrazole-derived carbanion...