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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66条记录   Pd(II)-Catalyzed Decarboxylative Cross-Coupling of Potassium Aryltrifluoroborates with alpha-Oxocarboxylic Acids at Room Temperature [作者：LI MINGZONG; WANG CONG; GE HAIBO,期刊：Organic Letters, 页码：2062-2064 , 文章类型： Article，,卷期：2011年13-8] A novel Pd-catalyzed decarboxylative cross-coupling of potassium aryltrifluoroborates with alpha-oxocarboxylic acids is performed at room temperature. This reaction provides an efficient access to aryl ketones under mild... Synthesis of the Tricyclic Core of Aldingenin B by Oxidative Cyclo-Ketalization of an Alkyne-Diol [作者：YANG JINGYUE; TUMMATORN JUMREANG; SLEGERIS RIMANTAS; TLAIS SAMI F; DUDLEY GREGORY B,期刊：Organic Letters, 页码：2065-2067 , 文章类型： Article，,卷期：2011年13-8] The preparation and selenium-mediated cyclo-ketalization of an alkyne-diol is described as a model study for the synthesis of aldingenin B. The oxidative cyclization is a simplifying transformation for aldingenin B, as i... A Practical Synthesis of (-)-Kainic Acid [作者：TAKITA SATOSHI; YOKOSHIMA SATOSHI; FUKUYAMA TOHRU,期刊：Organic Letters, 页码：2068-2070 , 文章类型： Article，,卷期：2011年13-8] A highly practical stereoselective total synthesis of (-)-kainic acid is described. This synthesis features the stereoselective alkylation of an iodolactone intermediate that was efficiently prepared from (+)-carvone and... Selective Oxidation of Benzylic and Allylic Alcohols Using Mn(OAc)(3)/Catalytic 2,3-Dichloro-5,6-dicyano-1,4-benzoquinone [作者：COSNER CASEY C; CABRERA PABLO J; BYRD KATHERINE M; THOMAS ASIA M ADAMS; HELQUIST PAUL,期刊：Organic Letters, 页码：2071-2073 , 文章类型： Article，,卷期：2011年13-8] A practical, chemoselective oxidation of alcohols employing catalytic quantities of DDQ as the oxidant and Mn(OAc)(3) as the co-oxidant is described. Electron-rich benzylic alcohols are oxidized efficiently to their corr... Intramolecular Hydride Addition to Pyridinium Salts: New Routes to Enantiopure Dihydropyridones [作者：DONOHOE TIMOTHY J; CONNOLLY MATTHEW J; RATHI AKSHAT H; WALTON LESLEY,期刊：Organic Letters, 页码：2074-2077 , 文章类型： Article，,卷期：2011年13-8] The transformation of a simple disubstituted pyridine into a pyridinium ion bearing an exocyclic hydroxyl group, protected as a silane, enabled an intramolecular hydride transfer reaction to take place when fluoride was ... A Simple but Effective Dual Redox and Fluorescent Ion Pair Receptor Based on a Ferrocene-Imidazopyrene Dyad [作者：ALFONSO MARIA; ESPINOSA ARTURO; TARRAGA ALBERTO; MOLINA PEDRO,期刊：Organic Letters, 页码：2078-2081 , 文章类型： Article，,卷期：2011年13-8] The ferrocene-imidazopyrene dyad, bearing the imidazole ring as the only receptor site, acts as a redox and optical molecular sensor for ion pairs, exhibiting an easily detectable signal change in the redox potential of ... Rapid One-Pot, Four-Step Synthesis of Highly Fluorescent 1,3,4,5-Tetrasubstituted Pyrazoles [作者：WILLY BENJAMIN; MUELLER THOMAS J J,期刊：Organic Letters, 页码：2082-2085 , 文章类型： Article，,卷期：2011年13-8] 1,3,4,5-Tetrasubstituted pyrazoles can be rapidly and efficiently synthesized in a one-pot, four-step sequence consisting of Sonogashira coupling, addition-cyclocondensation, bromination, and Suzuki coupling. The second ... Regiocontrolled Rearrangement of Isobenzofurans [作者：EGAN BEN A; PARADOWSKI MICHAEL; THOMAS LYNNE H; MARQUEZ RODOLFO,期刊：Organic Letters, 页码：2086-2089 , 文章类型： Article，,卷期：2011年13-8] The regioselective alkylation and oxidative rearrangement of isobenzofurans has been achieved to generate substituted 4,8-dihydroxyisochromanones in good yields and with complete regiocontrol. Total Synthesis and Biological Evaluation of (-)-9-Deoxy-englerin A [作者：USHAKOV DMITRY B; NAVICKAS VAIDOTAS; STROEBELE MARKUS; MAICHLEMOESSMER CAECILIA; SASSE FLORENZ; MAIER MARTIN E,期刊：Organic Letters, 页码：2090-2093 , 文章类型： Article，,卷期：2011年13-8] An effective total synthesis of (-)-9-deoxy-englerin (4), an analogue of the natural guaiane sesquiterpene englerin A (1), has been achieved. The synthesis features a transannular epoxide opening to construct the 5,7-fus... Activation of the Si-B Linkage: Copper-Catalyzed Addition of Nucleophilic Silicon to Imines [作者：VYAS DEVENDRA J; FROEHLICH ROLAND; OESTREICH MARTIN,期刊：Organic Letters, 页码：2094-2097 , 文章类型： Article，,卷期：2011年13-8] Activation of the Si-B bond through copper-catalyzed transmetalation quickly developed into a practical method to generate Cu-Si reagents. These silicon nucleophiles cleanly add to aldehyde-derived imine electrophiles to... Sequence Stereoisomerism in Calixarene-Based Pseudo[3]rotaxanes [作者：TALOTTA CARMEN; GAETA CARMINE; PIERRO TERESA; NERI PLACIDO,期刊：Organic Letters, 页码：2098-2101 , 文章类型： Article，,卷期：2011年13-8] Two calix[6]arene directional wheels can be ordered in the right stereosequence by their through-the-annulus threading with a rationally designed bis(benzylalkylammonium) axle. These stereoisomeric pseudo[3]rotaxanes can... Pd-Catalyzed C-H Activation/C-N Bond Formation: A New Route to 1-Aryl-1H-benzotriazoles [作者：KUMAR RAPOLU KIRAN; ALI MD ASHIF; PUNNIYAMURTHY THARMALINGAM,期刊：Organic Letters, 页码：2102-2105 , 文章类型： Article，,卷期：2011年13-8] A method for the C-H activation of aryl triazene compounds followed by intramolecular amination is described. It involves the use of a catalytic amount of Pd(OAc)(2) that efficiently effects the cyclization to provide 1-... Structure and Synthesis of a Unique Isonitrile Lipid Isolated from the Marine Mollusk Actinocyclus papillatus [作者：MANZO EMILIANO; CARBONE MARIANNA; MOLLO ERNESTO; IRACE CARLO; DI PASCALE ANTONIO; LI YAN; CIAVATTA MARIA LETIZIA; CIMINO GUIDO; GUO YUEWEI; GAVAGNIN MARGHERITA,期刊：Organic Letters, 页码：1897-1899 , 文章类型： Article，,卷期：2011年13-8] The first chemical study of an Actinocyclidae nudibranch, Actinocyclus papillatus, resulted in the isolation of (-)-actisonitrile (1), a lipid based on a 1,3-propanediol ether skeleton. The structure was established by s... Ligand-accelerated Enantioselective Propargylation of Aldehydes via Allenylzinc Reagents [作者：TROST BARRY M; NGAI MINGYU; DONG GUANGBIN,期刊：Organic Letters, 页码：1900-1903 , 文章类型： Article，,卷期：2011年13-8] An enantioselective propargylation of aldehydes using an allenylzinc reagent generated in situ via a zinc-iodine exchange reaction is described. The enantioselectivity is controlled by addition of a catalytic amount of r... A Simple, Nontoxic Iron System for the Allylation of Zinc Enolates [作者：JARUGUMILLI GOPALA K; COOK SILAS P,期刊：Organic Letters, 页码：1904-1907 , 文章类型： Article，,卷期：2011年13-8] Diiron nonacarbonyl in combination with triphenylphosphine has been identified as a low-cost and environmentally benign catalyst system for the allylation of zinc enolates generated in situ from copper-catalyzed asymmetr... Mild and Selective Vanadium-Catalyzed Oxidation of Benzylic, Allylic, and Propargylic Alcohols Using Air [作者：HANSON SUSAN K; WU RUILIAN; SILKS L A PETE,期刊：Organic Letters, 页码：1908-1911 , 文章类型： Article，,卷期：2011年13-8] Transition metal-catalyzed aerobic alcohol oxidation is an attractive method for the synthesis of carbonyl compounds, but most catalytic systems feature precious metals and require pure oxygen. The vanadium complex (HQ)(...