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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96条记录   Aromaticity and Relative Stabilities of Azines [作者：WANG YAN; WU JUDY ICHIA; LI QIANSHU; SCHLEYER PAUL VON RAGUE,期刊：Organic Letters, 页码：4824-4827 , 文章类型： Article，,卷期：2010年12-21] The most refined nucleus-independent chemical shift index (NICS(0)(pi zz)) and the extra cyclic resonance energies (ECREs), based on the block localized wave function (BLW) method, show that the aromaticity of all azines... Guest Recognition in a Partially Bridged Deep Cavitand [作者：BUSSERON ERIC; REBEK JULIUS JR,期刊：Organic Letters, 页码：4828-4831 , 文章类型： Article，,卷期：2010年12-21] The synthesis of a new deep cavitand partially bridged via disulfide bonds is described. Its thermodynamic and kinetic complexation parameters are compared with those of an unbridged analogue. The disulfide bridges cause... Palladium-Catalyzed [1,3]-O-to-C Rearrangement of Pyrans toward Functionalized Cyclohexanones [作者：BRIOCHE JULIEN C R; BARKER THOMAS A; WHATRUP DAVID J; BARKER MICHAEL D; HARRITY JOSEPH P A,期刊：Organic Letters, 页码：4832-4835 , 文章类型： Article，,卷期：2010年12-21] Functionalized cyclohexanones are prepared from cyclic enol ethers via a Pd-catalyzed [1,3]-O-to-C rearrangement reaction. alpha-Arylketones are generated with excellent diastereocontrol when basic phosphine ligands are ... The Total Synthesis of (-)-7-Deoxyloganin via N-Heterocyclic Carbene Catalyzed Rearrangement of alpha,beta-Unsaturated Enol Esters [作者：CANDISH LISA; LUPTON DAVID W,期刊：Organic Letters, 页码：4836-4839 , 文章类型： Article，,卷期：2010年12-21] The diastereoselective N-heterocyclic carbene (NHC) catalyzed rearrangement of alpha,beta-unsaturated enol ester (S)-2b has been used to assemble dihydropyranone (S)-3b, a material embodying the bicyclic core of the irid... Unusual Molecular Conformations in Fluorinated, Contorted Hexabenzocoronenes [作者：LOO YUEHLIN; HISZPANSKI ANNA M; KIM BUMJUNG; WEI SUJUN; CHIU CHIENYANG; STEIGERWALD MICHAEL L; NUCKOLLS COLIN,期刊：Organic Letters, 页码：4840-4843 , 文章类型： Article，,卷期：2010年12-21] Fluorinated, contorted hexabenzocoronenes (HBCs) have been synthesized in a facile manner via Suzuki-Miyaura coupling of fluorinated phenyl boronic acids followed by photocyclization and Scholl cyclization. In addition t... The Quest for Tetracoordinated Halonium Ions: A Theoretical Investigation [作者：SCHNEIDER TOBIAS F; WERZ DANIEL B,期刊：Organic Letters, 页码：4844-4847 , 文章类型： Article，,卷期：2010年12-21] Di-, tri-, and tetravalent halonium ions have been investigated by theoretical means with respect to their geometries and their electronic structure using DFT as well as MP2 calculations. Even tricationic species where h... Efficient Microwave-Assisted Synthesis of Human Islet Amyloid Polypeptide Designed to Facilitate the Specific Incorporation of Labeled Amino Acids [作者：MAREK PETER; WOYS ANN MARIE; SUTTON KELVIN; ZANNI MARTIN T; RALEIGH DANIEL P,期刊：Organic Letters, 页码：4848-4851 , 文章类型： Article，,卷期：2010年12-21] A cost-efficient, time-reducing solid-phase synthesis of the amyloidogenic, 37 residue islet amyloid polypeptide (IAPP) is developed using two pseudoprolines (highlighted blue in sequence) in combination with microwave t... Synthesis and Characterization of Solution-Processable Core-Cyanated Perylene-3,4;9,10-bis(dicarboximide) Derivatives [作者：ANDO SHINJI; FACCHETTI ANTONIO; MARKS TOBIN J,期刊：Organic Letters, 页码：4852-4855 , 文章类型： Article，,卷期：2010年12-21] Core-cyanated perylene-3,4;9,10-bis(carboxyimide) derivatives N-functionalized with tethered anthracenes (PDI3A-CN2, PDI4A-CN2) and the corresponding solution-processable cycloadduct precursors (PDI3A-CA-CN2, PDI4A-CA-CN... Efficient Generation of Biologically Active H-Pyrazolo[5,1-a]isoquinolines via Multicomponent Reaction [作者：CHEN ZHIYUAN; WU JIE,期刊：Organic Letters, 页码：4856-4859 , 文章类型： Article，,卷期：2010年12-21] A highly efficient multicomponent reaction of 2-alkynylbenzaldehyde, sulfonohydrazide, alcohol, and alpha,beta-unsaturated aldehyde or ketone is disclosed, which generates the diverse H-pyrazolo[5,1-a]isoquinolines in go... Novel Acyclic Diaminocarbene Ligands with Increased Steric Demand and Their Application in Gold Catalysis [作者：SEO HWIMIN; ROBERTS BENJAMIN P; ABBOUD KHALIL A; MERZ KENNETH M JR; HONG SUKWON,期刊：Organic Letters, 页码：4860-4863 , 文章类型： Article，,卷期：2010年12-21] Sterically demanding and conformationally stable N,N'-ditertiaryalkyl-N,N'-diphenyl acyclic diaminocarbenes (ADCs) were developed. Bulky ADC-Au catalysts not only showed competitive reactivities in hydroamination and eny... Self-Assembly of a Hexameric Aggregate of a Lipophilic Calix[4]pyrrole-Resorcinarene Hybrid in Solution: A Diffusion NMR Study [作者：SLOVAK S; EVANSALEM T; COHEN Y,期刊：Organic Letters, 页码：4864-4867 , 文章类型： Article，,卷期：2010年12-21] The lipophilic calix[4]pyrrole-resorcinarene hybrid 1b, the extended analogue of resorcin[4]arene 2b, was synthesized for the first time, and its self-assembly in solution was studied using H-1 and diffusion NMR. It was ... A Fused Donor-Acceptor System Based on an Extended Tetrathiafulvalene and a Ruthenium Complex of Dipyridoquinoxaline [作者：CHESNEAU BERTRAND; HARDOUINLEROUGE MARIE; HUDHOMME PIETRICK,期刊：Organic Letters, 页码：4868-4871 , 文章类型： Article，,卷期：2010年12-21] An application of the Horner-Wadsworth-Emmons reaction carried out on a ruthenium compound as the electrophilic precursor is described for the synthesis of fused donor acceptor system 1 based on an extended tetrathiafulv... Total Synthesis of (+/-)-Marinopyrrole A via Copper-Mediated N-Arylation [作者：KANAKIS ARGYRIOS A; SARLI VASILIKI,期刊：Organic Letters, 页码：4872-4875 , 文章类型： Article，,卷期：2010年12-21] The total synthesis of the racemic form of the marine alkaloid marinopyrrole A is described. The characteristic 1,3'-bipyrrole core was constructed by a copper-mediated N-arylation process under microwave irradiation. Synthesis of Amidomethyltrifluoroborates and Their Use in Cross-Coupling Reactions [作者：MOLANDER GARY A; HIEBEL MARIEAUDE,期刊：Organic Letters, 页码：4876-4879 , 文章类型： Article，,卷期：2010年12-21] Amidomethyltrifluoroborates were successfully synthesized in a one-pot fashion and used in cross-coupling reactions with a wide variety of aryl and heteroaryl chlorides. Aromatization of Fulvene by Complexation with Lithium [作者：OZIMINSKI W P; KRYGOWSKI T M; FOWLER P W; SONCINI A,期刊：Organic Letters, 页码：4880-4883 , 文章类型： Article，,卷期：2010年12-21] At the B3LYP/6-311++G(d,p) level, approach of a lithium atom to a face of the fulvene molecule leads to formation of a complex with binding energy 41 kcal/mol and significant ion-pair character. The fulvene moiety gains ... InCl3-Catalyzed Allylic Friedel-Crafts Reactions toward the Stereocontrolled Synthesis of 1,2,3,4-Tetrahydroquinolines [作者：GIERA DAVID S; SCHNEIDER CHRISTOPH,期刊：Organic Letters, 页码：4884-4887 , 文章类型： Article，,卷期：2010年12-21] Allyl chlorides tethered to an N-aryl moiety readily undergo InCl3-catalyzed Friedel Crafts reactions to furnish highly enantiomerically enriched 1,2,3,4-tetrahydroquinolines with good yields and excellent diastereoselec...