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32条记录   [5+1]-Annulation Strategy Based on Alkenoyl Ketene Dithioacetals and Analogues [作者：PAN LING; LIU QUN,期刊：SYNLETT, 页码：1073-1080 , 文章类型： Article，,卷期：2011年-8] Functionalized ketene dithioacetals are versatile intermediates in organic synthesis. The important multiple roles of the dialkylthio group make these substrates particularly useful for the synthesis of a number of impor... Magnetically Recoverable Pd/Fe3O4-Catalyzed Hiyama Cross-Coupling of Aryl Bromides with Aryl Siloxanes [作者：SREEDHAR B; KUMAR A SURESH; YADA DIVYA,期刊：SYNLETT, 页码：1081-1084 , 文章类型： Article，,卷期：2011年-8] This letter describes a simple and efficient method for the synthesis of biaryls by fluoride-free Hiyama cross-coupling of bromoarenes with aryl siloxanes using magnetically separable Pd/Fe3O4 as the catalyst under aqueo... Steering Glycosylation with the Carbon-Fluorine Bond [作者：BUCHER CHRISTOPH; GILMOUR RYAN,期刊：SYNLETT, 页码：1043-1046 , 文章类型： Article，,卷期：2011年-8] 2-Fluoroglycosyl donors display orthogonal stereoselectivities as a consequence of a reinforcing combination of the C-2-fluorine configuration and the inductive nature of the protecting groups. Cobalt-Catalyzed, Chelation-Assisted C-H Bond Functionalization [作者：YOSHIKAI NAOHIKO,期刊：SYNLETT, 页码：1047-1051 , 文章类型： Article，,卷期：2011年-8] While chelation-assisted C-H bond activation by a transition-metal complex serves as a versatile platform for the development of regioselective C-H bond-functionalization reactions, the capability of first-row transition... Synthesis of Trifluoromethylated and gem-Difluoromethylenated Biologically Interesting Compounds from Fluorine-Containing Synthons [作者：QING FENGLING; ZHENG FENG,期刊：SYNLETT, 页码：1052-1072 , 文章类型： Article，,卷期：2011年-8] A number of fluorinated versatile building blocks (synthons) were developed for the synthesis of trifluoromethylated and gem-difluoromethylenated biologically interesting compounds. Extensive studies have demonstrated th... New, Readily Available Organocatalysts for the Enantioselective Reduction of alpha-Imino- and beta-Imino Esters [作者：BONSIGNORE MARTINA; BENAGLIA MAURIZIO; ANNUNZIATA RITA; CELENTANO GIUSEPPE,期刊：SYNLETT, 页码：1085-1088 , 文章类型： Article，,卷期：2011年-8] Novel metal-free, readily available chiral catalytic systems for the enantioselective reduction of keto imines are reported. Different beta-imino esters were reduced by trichlorosilane in the presence of 10 mol% of a chi... An Efficient Protocol for the Synthesis of 2-Phenylquinazolines Catalyzed by Ceric Ammonium Nitrate (CAN) [作者：KARNAKAR K; SHANKAR J; MURTHY S NARAYANA; RAMESH K; NAGESWAR Y V D,期刊：SYNLETT, 页码：1089-1096 , 文章类型： Article，,卷期：2011年-8] A facile and efficient method for the synthesis of 2-phenylquinazolines has been developed from 2-aminobenzophenones and benzylamines catalyzed by ceric ammonium nitrate (CAN)-TBHP in acetonitrile. The corresponding 2-ph... Acetic Anhydride Generated Imidazolium Ylide in Ring Closures onto Carboxylic Acids; Part of the Synthesis of New Potential Bioreductive Antitumor Agents [作者：JOYCE EAMONN; MCARDLE PATRICK; ALDABBAGH FAWAZ,期刊：SYNLETT, 页码：1097-1100 , 文章类型： Article，,卷期：2011年-8] Acetic anhydride behaves as a traceless activating agent allowing thermal intramolecular condensation of 2-(benzimidazol-1-ylmethyl) benzoic and nicotinic acids. Autoxidation gives benzimidazo[1,2-b]isoquinoline-6,11-dio... Rearrangement of 1-Phenylbutane-1,3-diamines via an Azetidinium Cation Intermediate [作者：BLAKEMORE DAVID C; CHIVA JEANYVES; THISTLETHWAITE IAIN,期刊：SYNLETT, 页码：1101-1104 , 文章类型： Article，,卷期：2011年-8] Treatment of 4-amino-4-phenyl-butan-2-ol with mesyl chloride, followed by displacement with amine nucleophiles resulted in a 1,3 rearrangement via an azetidinium cation intermediate. This rearrangement has been proven to... Practical and Novel One-Pot Protocol for the Synthesis of Highly Functionalized Pyridinols and Pyrido[1,2-a]-Fused 1,3-Diazaheterocycles [作者：ALIZADEH ABDOLALI; REZVANIAN ATIEH,期刊：SYNLETT, 页码：1105-1108 , 文章类型： Article，,卷期：2011年-8] A novel and efficient protocol for the generation of substituted pyridinols and pyrido[1,2-a]-fused 1,3-diazaheterocycles from primary amine or 1, n-diamine, nitro ketene dithioacetal [1, l-bis(methylthio)-2-nitroethene]... Exploiting Guanidine as a Ligand in Cobalt-Catalyzed Alkyne Cyclotrimerizations [作者：EICHMAN CHAD C; BRAGDON JASON P; STAMBULI JAMES P,期刊：SYNLETT, 页码：1109-1112 , 文章类型： Article，,卷期：2011年-8] The synthesis of polysubstituted arenes is accomplished via the regioselective cyclotrimerization of alkynes utilizing a guanidine-ligated cobalt catalyst. The Catalytic Addition of Alkyl Boranes to Alkynyl Esters Affording Single-Isomer Trisubstituted Olefins [作者：RAJAGOPAL THIVISHA; OGILVIE WILLIAM W,期刊：SYNLETT, 页码：1113-1116 , 文章类型： Article，,卷期：2011年-8] The generation of a series of trisubstituted olefins bearing alkyl substituents is described using a stereoselective and regioselective addition to alkynyl esters. The method produces trisubstituted olefins as single iso... Efficient and Scalable Synthesis of Pyridine Sulfonamides [作者：EMURA TAKASHI; YOSHINO HITOSHI; TACHIBANA KAZUTAKA; SHIRAISHI TAKUYA; HONMA AKIE; MIZUTANI AKEMI; MURAOKA TERUSHIGE,期刊：SYNLETT, 页码：1117-1120 , 文章类型： Article，,卷期：2011年-8] Short-step and scalable transformations from 2,6-dibromopyridine to 6-bromopyridine-2-sulfonamide by means of halogen-metal exchange and subsequent reaction with sulfuryl chloride followed by amidation are established. A... Aerobic Oxidation of Cyclic Amines to Lactams Catalyzed by PVP-Stabilized Nanogold [作者：PREEDASURIYACHAI PATCHAREE; CHAVASIRI WARINTHORN; SAKURAI HIDEHIRO,期刊：SYNLETT, 页码：1121-1124 , 文章类型： Article，,卷期：2011年-8] Gold nanoclusters stabilized by poly(N-vinyl-2-pyrrolidone) (Au:PVP) are active and selective catalysts under aerobic conditions for oxidation of cyclic secondary amines at the a-position of the nitrogen atom. The cataly... Catalytic Enantioselective Friedel-Crafts Alkylation of Indoles with beta,gamma-Unsaturated alpha-Keto Phosphonates in the Presence of Chiral Palladium Complexes [作者：KANG YOUNG KU; SUH KI HYUNG; KIM DAE YOUNG,期刊：SYNLETT, 页码：1125-1128 , 文章类型： Article，,卷期：2011年-8] The catalytic enantioselective Friedel-Crafts alkylation reaction promoted by chiral palladium complexes is described. The treatment of indoles with beta,gamma-unsaturated alpha-keto phosphonates under the mild reaction ... Can the Crabbe Homologation Be Successfully Applied to the Synthesis of 1,3-Disubstituted Allenes? [作者：KITAGAKI SHINJI; KOMIZU MIKA; MUKAI CHISATO,期刊：SYNLETT, 页码：1129-1132 , 文章类型： Article，,卷期：2011年-8] The Crabbe homologation of terminal alkynes could be applied to the synthesis of 1,3-disubstituted allenes using aldehydes, N,N-dicyclohexylamine, and a catalytic amount of copper(I) iodide. The key to this success was t...