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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75条记录   Primary Amine/CSA Ion Pair: A Powerful Catalytic System for the Asymmetric Enamine Catalysis [作者：LIU CHEN; ZHU QIANG; HUANG KUOWEI; LU YIXIN,期刊：Organic Letters, 页码：2638-2641 , 文章类型： Article，,卷期：2011年13-10] A novel ion pair catalyst containing a chiral counteranion can be readily derived by simply mixing cinchona alkaloid-derived diamine with chiral camphorsulforic acid (CSA). A mixture of 9-amino(9-deoxy)epi-quinine 8 and ... Aceno[2,1,3]thiadiazoles for Field-Effect Transistors: Synthesis and Crystal Packing [作者：LEI TING; ZHOU YAN; CHENG CHUYANG; CAO YUE; PENG YANG; BIAN JIANG; PEI JIAN,期刊：Organic Letters, 页码：2642-2645 , 文章类型： Article，,卷期：2011年13-10] An efficient synthetic approach to a series of aceno[2,1,3]thiadiazole derivatives is described. 2-TIPS and 2-TES molecules exhibited different crystal packing;, and 2-TIPS show good device performances with hole mobilit... Unprecedented Substoichiometric Use of Hazardous Aryl Diazonium Salts in the Heck-Matsuda Reaction via a Double Catalytic Cycle [作者：LE CALLONNEC FRANCOIS; FOUQUET ERIC; FELPIN FRANCOISXAVIER,期刊：Organic Letters, 页码：2646-2649 , 文章类型： Article，,卷期：2011年13-10] The first Heck-Matsuda reaction using a catalytic amount of diazonium salts has been discovered. The reaction proceeds through an unprecedented double catalytic cycle in which the electrophile is In situ generated throug... Fixed or Invertible Calixarene-Based Directional Shuttles [作者：PIERRO TERESA; GAETA CARMINE; TALOTTA CARMEN; CASAPULLO AGOSTINO; NERI PLACIDO,期刊：Organic Letters, 页码：2650-2653 , 文章类型： Article，,卷期：2011年13-10] The first examples of rotaxanes based on calixarenes threaded by dialkylammonium ions, which also represent the first examples of calixarene-based molecular shuttles, are reported. The base/acid treatment demonstrated th... Backscattering Interferometry: An Alternative Approach for the Study of Hydrogen Bonding Interactions in Organic Solvents [作者：PESCIOTTA ESTHER N; BORNHOP DARRYL J; FLOWERS ROBERT A II,期刊：Organic Letters, 页码：2654-2657 , 文章类型： Article，,卷期：2011年13-10] Intermolecular interactions involving hydrogen bonds are responsible for catalysis and recognition. Traditional methods used to study hydrogen. bonding interactions are generally limited to relatively large volumes and h... Free-Radical Carboalkynylation and Carboalkenylation of Olefins [作者：LIAUTARD VIRGINIE; ROBERT FREDERIC; LANDAIS YANNICK,期刊：Organic Letters, 页码：2658-2661 , 文章类型： Article，,卷期：2011年13-10] Free-radical three-component carboalkynylation and -alkenylation of olefins have been developed. These Involve the addition, across the double bond of an unactivated olefin, of a radical species alpha- to an electron-wit... Anthranilamide: A Simple, Removable ortho-Directing Modifier for Arylboronic Acids Serving also as a Protecting Group in Cross-Coupling Reactions [作者：IHARA HIDEKI; KOYANAGI MASASHI; SUGINOME MICHINORI,期刊：Organic Letters, 页码：2662-2665 , 文章类型： Article，,卷期：2011年13-10] Anthranilamide (AAM) serves as a bifunctional modifier on the boron atom in catalytic transformations of arylboronic acids. It makes boronyl groups unreactive in Suzuki-Miyaura coupling and promotes Ru-catalyzed ortho-si... Air- and Moisture-Stable p-Monothiobenzoquinones Incorporated in an Octaalkyl-s-hydrindacene Skeleton [作者：HACHIYA MAKOTO; ITO MIKINAO; MATSUO TSUKASA; HASHIZUME DAISUKE; FUENO HIROYUKI; TANAKA KAZUYOSHI; TAMAO KOHEI,期刊：Organic Letters, 页码：2666-2669 , 文章类型： Article，,卷期：2011年13-10] p-Monothiobenzoquinones incorporated in a fused-ring octaalkyl-s-hydrindacene skeleton have been synthesized as air- and moisture-stable reddish orange, crystals by the oxidation of mercaptophenol derivatives with DDQ, w... Virgatolides A-C, Benzannulated Spiroketals from the Plant Endophytic Fungus Pestalotiopsis virgatula [作者：LI JIAN; LI LI; SI YIKANG; JIANG XUEJUN; GUO LIANGDONG; CHE YONGSHENG,期刊：Organic Letters, 页码：2670-2673 , 文章类型： Article，,卷期：2011年13-10] Virgatolides A-C (1-3), unique metabolites with a 3',4',5',6'-tetrahydrospiro[chroman-2,2'-pyran] core, were Isolated from cultures of the plant endophytic fungus Pestalotlopsis virgatula. Compounds 1-3 possess two previ... Total Synthesis of (+/-)-Kainic Acid: A Photochemical C-H Carbamoylation Approach [作者：KAMON TAKUMA; IRIFUNE YAYOI; TANAKA TETSUAKI; YOSHIMITSU TAKEHIKO,期刊：Organic Letters, 页码：2674-2677 , 文章类型： Article，,卷期：2011年13-10] A novel photochemical C-H carbamoylation of an octahydroisolndole derivative with PhNCO has allowed the authors to provide a unique access to a highly functionalized proline motif from which total synthesis of (+/-)-kain... Triterpene Cyclases from Oryza sativa L.: Cycloartenol, Parkeol and Achilleol B Synthases [作者：ITO RYOUSUKE; MORI KOUYA; HASHIMOTO IPPEI; NAKANO CHIAKI; SATO TSUTOMU; HOSHINO TSUTOMU,期刊：Organic Letters, 页码：2678-2681 , 文章类型： Article，,卷期：2011年13-10] The gene products of AK121211, AK066327, and AK070534 from Oryza sativa encode cycloartenol, parkeol, and achilleol B synthases, respectively. Parkeol synthase is a unique enzyme that affords parkeol as a single product.... Selective Deoxygenation of Allylic Alcohol: Stereocontrolled Synthesis of Lavandulol [作者：KIM HEE JIN; SU LIANG; JUNG HEEJUNG; KOO SANGHO,期刊：Organic Letters, 页码：2682-2685 , 文章类型： Article，,卷期：2011年13-10] Selective deoxygenation of allylic alcohol can be successfully carried out by the formation of alkoxyalkyl ether (EE or MOM), followed by Pd(dppe)Cl-2-catalyzed reduction with LiBHEt3. (+)-S-Lavandulol has been efficient... Regioselective Hydroformylation of Allylic Alcohols [作者：LIGHTBURN THOMAS E; DE PAOLIS OMAR A; CHENG KA H; TAN KIAN L,期刊：Organic Letters, 页码：2686-2689 , 文章类型： Article，,卷期：2011年13-10] A highly regioselective hydroformylation of allylic alcohols is reported toward the synthesis of p-hydroxy-acid and aldehyde products. The selectivity is achieved through the use of a ligand that reversibly binds to alco... New Bicyclotridecane C-15 Nonterpenoid Bromoallenes from Laurencia marilzae [作者：GUTIERREZCEPEDA ADRIAN; FERNANDEZ JOSE J; NORTE MANUEL; SOUTO MARIA L,期刊：Organic Letters, 页码：2690-2693 , 文章类型： Article，,卷期：2011年13-10] Nonterpenoid bromoallenes possessing a novel skeleton that incorporates an unprecedented [5.5.1]bicyclotridecane ring system, marilzabicycloallenes A-D (1-4), were isolated from specimens of Laurencia marilzae collected ... Solvent Polarity Affects H Atom Abstractions from C-H Donors [作者：ELSHESHTAWY HAMDY S; PISCHEL UWE; NAU WERNER M,期刊：Organic Letters, 页码：2694-2697 , 文章类型： Article，,卷期：2011年13-10] Kinetic solvent effects on hydrogen abstractions involving C-H donors (dienes, ethers, alkylbenzenes) have been corroborated by experiment and theory (UB3LYP/6-311++G**, polarized continuum model). To single out the effe... First Total Synthesis of Rhodexin A [作者：JUNG MICHAEL E; YOO DONGWON,期刊：Organic Letters, 页码：2698-2701 , 文章类型： Article，,卷期：2011年13-10] An efficient total synthesis of rhodexin A (1) is reported. An initial inverse-electron-demand Diels-Alder reaction of the acyldiene 6 with the silyl enol ether 7 gave the cycloadduct 8 with the required 4 contiguous ste...