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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71条记录   An Organocascade Kinetic Resolution [作者：MCGARRAUGH PATRICK G; BRENNERMOYER STACEY E,期刊：Organic Letters, 页码：6460-6463 , 文章类型： Article，,卷期：2011年13-24] Products of a novel iminium-catalyzed oxa-Michael addition undergo a kinetic resolution by a subsequent enamine-catalyzed intermolecular reaction. This is a rare example of kinetic resolution by enamine catalysis and the... Stereoselective Vinylation of Aryl N-(2-Pyridylsulfonyl) Aldimines with 1-Alkenyl-1,1-heterobimetallic Reagents [作者：HUSSAIN NUSRAH; HUSSAIN MAHMUD M; ZIAUDDIN MUHAMMED; TRIYAWATANYU PLENGCHAT; WALSH PATRICK J,期刊：Organic Letters, 页码：6464-6467 , 文章类型： Article，,卷期：2011年13-24] Vinylation of aryl N-(2-pyridylsulfonyl) aldimines with versatile 1-alkenyl-1,1-borozinc heterobimetallic reagents is disclosed. In situ hydroboration of air-stable B(pin)-alkynes followed by chemoselective transmetalati... Amino Triazolo Diazepines (Ata) as Constrained Histidine Mimics [作者：BUYSSE KOEN; FARARD JULIEN; NIKOLAOU ALEXANDROS; VANDERHEYDEN PATRICK; VAUQUELIN GEORGES; PEDERSEN DANIEL SEJER; TOURWE DIRK; BALLET STEVEN,期刊：Organic Letters, 页码：6468-6471 , 文章类型： Article，,卷期：2011年13-24] Two synthetic routes for the synthesis of amino-triazolodiazepine (Ata) scaffolds are presented. The scope of both of these proceeding through key intra- and intermolecular Huisgen cycloaddition reactions is discussed. T... Synthesis of the Asperparaline Core by a Radical Cascade [作者：CRICK PETER J; SIMPKINS NIGEL S; HIGHTON ADRIAN,期刊：Organic Letters, 页码：6472-6475 , 文章类型： Article，,卷期：2011年13-24] A concise access to the pentacyclic core structure of the asperparalines is described. The key step is a radical cascade sequence comprised of a 1,6-hydrogen atom transfer followed by 6-exo-trig and 5-exo-trig cyclizatio... Hybrid Aminoglycoside Antibiotics via Tsuji Palladium-Catalyzed Allylic Deoxygenation [作者：HANESSIAN STEPHEN; MAIANTI JUAN PABLO; MATIAS ROWENA D; FEENEY LEE ANN; ARMSTRONG ELIANA S,期刊：Organic Letters, 页码：6476-6479 , 文章类型： Article，,卷期：2011年13-24] Biosynthetically inspired manipulation of the antibiotic paromomycin led, in six high-yielding steps, to a ring A harboring an alpha,beta-unsaturated 6'-aldehyde and an allylic 3'-methylcarbonate group. Tsuji deoxygenati... Iron-Catalyzed Rearrangements and Cycloaddition Reactions of 2H-Chromenes [作者：LUAN YI; SUN HUAN; SCHAUS SCOTT E,期刊：Organic Letters, 页码：6480-6483 , 文章类型： Article，,卷期：2011年13-24] Iron(III) salts catalyze the tandem rearrangement/hetero-Diels-Alder reaction of 2H-chromenes to yield tetrahydrochromeno heterocycles. The process can occur as a homodimerization and cycloaddition process using electron... Core-Extended Terrylene Diimide on the Bay Region: Synthesis and Optical and Electrochemical Properties [作者：BAI QIANQIAN; GAO BAOXIANG; AI QI; WU YONGGANG; BA XINWU,期刊：Organic Letters, 页码：6484-6487 , 文章类型： Article，,卷期：2011年13-24] Two novel core-extended terrylene diimides on the bay region (CETDIs) were synthesized via annulation of the four additional ethylene units or benzene units on the bay region of the terrylene diimide core. The optical an... Design, Synthesis, Structure, and Dehydrogenation Reactivity of a Water-Soluble o-lodoxybenzoic Acid Derivative Bearing a Trimethylammonium Group [作者：CUI LIDIAN; DONG ZHILEI; LIU KAI; ZHANG CHI,期刊：Organic Letters, 页码：6488-6491 , 文章类型： Article，,卷期：2011年13-24] 5-Trimethylammonio-1,3-dioxo-1,3-dihydro-1 lambda(5)-benzo[d][1,2]iodoxol-1-ol anion (AIBX 1a), an o-iodoxybenzoic acid (IBX) derivative having the trimethylammonium moiety on its phenyl ring, possesses very good solubil... Synthesis, Crystal Structures, and Electronic Properties of Nonlinear Fused Thienoacene Semiconductors [作者：BLACK HAYDEN T; LIU SHUBIN; ASHBY VALERIE SHEARES,期刊：Organic Letters, 页码：6492-6495 , 文章类型： Article，,卷期：2011年13-24] Two fused thienoacene compounds with two-dimensional ring connectivity were synthesized, and their semiconducting properties were characterized. Both compounds have a crystal structure comprised of herringbone arrays of ... Palladium-Catalyzed Synthesis of 4-Aminophthalazin-1(2H)-ones by Isocyanide Insertion [作者：VLAAR TJOSTIL; RUIJTER EELCO; ZNABETT ANASS; JANSSEN ELWIN; DE KANTER FRANS J J; MAES BERT U W; ORRU ROMANO V A,期刊：Organic Letters, 页码：6496-6499 , 文章类型： Article，,卷期：2011年13-24] Palladium-catalyzed cross-coupling of a wide range of substituted o-(pseudo)halobenzoates and hydrazines with isocyanide insertion followed by lactamization efficiently affords 4-aminophthalazin-1(2H)-ones that are diffi... A Concise Synthesis of Tetrabenazine: An Intramolecular Aza-Prins-Type Cyclization via Oxidative C-H Activation [作者：SON YOUNG WOOK; KWON TAE HUI; LEE JAE KYUN; RAE AE NIM; LEE JAE YEOL; CHO YONG SEO; MIN SUNJOON,期刊：Organic Letters, 页码：6500-6503 , 文章类型： Article，,卷期：2011年13-24] A concise synthesis of tetrabenazine and dihydrotetrabenazine is described. The key feature of this synthesis is the intramolecular aza-Prins-type cyclization of an amino allylsilane via oxidative C-H activation. Selenium-Catalyzed Regioselective Cyclization of Unsaturated Carboxylic Acids Using Hypervalent Iodine Oxidants [作者：SINGH FATEH V; WIRTH THOMAS,期刊：Organic Letters, 页码：6504-6507 , 文章类型： Article，,卷期：2011年13-24] A new and convenient selenium-catalyzed regioselective cyclization of gamma,delta-unsaturated carboxylic acids to the corresponding 3,6-dihydro-2H-pyran-2-ones is described. The cyclization products have been obtained in... Silicon-Based Lewis Acid Assisted Cinchona Alkaloid Catalysis: Highly Enantioselective Aza-Michael Reaction under Solvent-Free Conditions [作者：YANG HUAMENG; LI LI; LI FEI; JIANG KEZHI; SHANG JUNYAN; LAI GUOQIAO; XU LIWEN,期刊：Organic Letters, 页码：6508-6511 , 文章类型： Article，,卷期：2011年13-24] The study showed that a combination of an achiral silicon-based Lewis acid and chiral Lewis base, such as iodotrimethylsilane (TMSI) and cinchonine, generated a highly enantioselective catalyst system under solvent-free ... Palladium-Catalyzed Benzylation of Unprotected Anthranilic Acids with Benzyl Alcohols in Water [作者：HIKAWA HIDEMASA; YOKOYAMA YUUSAKU,期刊：Organic Letters, 页码：6512-6515 , 文章类型： Article，,卷期：2011年13-24] Palladium-catalyzed benzylation of unprotected anthranilic acids with benzyl alcohols in the presence of Pd(OAc)(2) (5 mol %) and sodium diphenylphosphinobenzene-3-sulfonate (TPPMS, 10 mol %) in water at 120 degrees C fo... Regiospecific Synthesis of 1,2-Disubstituted (Hetero)aryl Fused Imidazoles with Tunable Fluorescent Emission [作者：ZHAO DONGBING; HU JUNYI; WU NINGJIE; HUANG XIAOLEI; QIN XURONG; LAN JINGBO; YOU JINGSONG,期刊：Organic Letters, 页码：6516-6519 , 文章类型： Article，,卷期：2011年13-24] A palladium-catalyzed two or fourfold amination was established that allows regiospecific synthesis of a diversity-oriented library of 1,2-disubstituted (hetero)aryl fused imidazoles, and provides an exceptional tool for... Enantioselective Enolate Protonation in Sulfa-Michael Addition to alpha-Substituted N-Acryloyloxazolidin-2-ones with Bifunctional Organocatalyst [作者：RANA NIRMAL K; SINGH VINOD K,期刊：Organic Letters, 页码：6520-6523 , 文章类型： Article，,卷期：2011年13-24] Organocatalytic conjugate addition of thiols to alpha-substituted N-acryloyloxazolidin-2-ones followed by asymmetric protonation has been studied in the presence of cinchona alkaloid derived thioureas. Both of the enanti...