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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51条记录   Rh(III)-Catalyzed C-H Bond Activation along with "Rollover" for the Synthesis of 4-Azafluorenes [作者：SHIBATA TAKANORI; TAKAYASU SATOSHI; YUZAWA SHUN; OTANI TAKASHI,期刊：Organic Letters, 页码：5106-5109 , 文章类型： Article，,卷期：2012年14-19] An intramolecular reaction of 3-alkynyl and 3-alkenyl-2-arylpyridines selectively gave 4-azafluorene compounds in the presence of a catalytic amount of [Cp*RhCl2](2) and Cu(OAc)(2). Pyridine-directed C-H bond activation ... Total Synthesis of Cyclocitropside A and Its Conversion to Cyclocitropsides B and C via Asparagine Deamidation [作者：THOMPSON ROBERT E; PAYNE RICHARD J; JOLLIFFE KATRINA A,期刊：Organic Letters, 页码：5110-5113 , 文章类型： Article，,卷期：2012年14-19] The total syntheses of three closely related cyclic peptide natural products, cyclocitropsides A C, are described. Cyclocitropside A could be readily converted into cyclocitropsides B and C through an asparagine deamidat... Tandem Semipinacol-Type 1,2-Carbon Migration/Aldol Reaction toward the Construction of [5-6-7] All-Carbon Tricyclic Core of Calyciphylline A-Type Alkaloids [作者：YANG MING; WANG LIN; HE ZHENGHE; WANG SHAOHUA; ZHANG SHUYU; TU YONGQIANG; ZHANG FUMIN,期刊：Organic Letters, 页码：5114-5117 , 文章类型： Article，,卷期：2012年14-19] A Lewis acid promoted tandem semipinacol-type 1,2-carbon migration/aldol reaction of trimethylsilane-protected vinylogous alpha-ketols with aldehyde or dimethyl acetals is reported. This reaction provides a direct and ra... A Convergent, Unified Approach to Functionalized Fluoro- and Trifluoromethyl Alkenes [作者：DEBIEN LAURENT; QUICLETSIRE BEATRICE; ZARD SAMIR S,期刊：Organic Letters, 页码：5118-5121 , 文章类型： Article，,卷期：2012年14-19] A modular, convergent, and operationally simple route to trifluoromethyl alkenes and vinyl fluorides involving a unique carbon-oxygen bond homolysis is reported. Highly functionalized trifluoromethyl alkenes and vinyl fl... Asymmetric Addition of Alkoxy Ethynyl Anion to Chiral N-Sulfinyl Imines [作者：VERRIER CHARLIE; CARRET SEBASTIEN; POISSON JEANFRANCOIS,期刊：Organic Letters, 页码：5122-5125 , 文章类型： Article，,卷期：2012年14-19] The addition of lithiated ynol ethers to chiral N-sulfinyl imines proceeds in high yield and diastereoselectivity. The selectivity is completely reversed by the addition of boron trifluoride. These alkoxypropargyl sulfin... Glycosylations of Cyclopropyl-Modified Carbohydrates: Remarkable beta-Selectivity Using a Mannose Building Block [作者：BRAND CHRISTIAN; KETTELHOIT KATHARINA; WERZ DANIEL B,期刊：Organic Letters, 页码：5126-5129 , 文章类型： Article，,卷期：2012年14-19] A mannosyl donor bearing a spiroannulated cyclopropane unit at C-5 has been prepared, and its behavior in glycosylation reactions investigated. Selectivities in favor of the beta-anomer were observed. Corresponding di- a... Asymmetric Synthesis of Cyclopropanes with a Monofluorinated Quaternary Stereocenter [作者：IVASHKIN PAVEL; COUVEBONNAIRE SAMUEL; JUBAULT PHILIPPE; PANNECOUCKE XAVIER,期刊：Organic Letters, 页码：5130-5133 , 文章类型： Article，,卷期：2012年14-19] New chiral fluorinated reagents (N-(dibromofluoroacetyl)oxazolidinones) were easily synthesized and used in an asymmetric cyclopropanation process. The Michael initiated ring closure reaction provided chiral cyclopropane... Asymmetric 1,2-Reduction of Enones with Potassium Borohydride Catalyzed by Chiral N,N '-Dioxide-Scandium(III) Complexes [作者：HE PENG; LIU XIAOHUA; ZHENG HAIFENG; LI WEI; LIN LILI; FENG XIAOMING,期刊：Organic Letters, 页码：5134-5137 , 文章类型： Article，,卷期：2012年14-19] The first catalytic enantioselective 1,2-reduction of enones with 0.45 mol equiv potassium borohydride solution catalyzed by a chiral N,N'-dioxide-Sc(III) complex catalyst was accomplished under mild reaction conditions.... Palladium-Catalyzed Allylic Fluorination of Cinnamyl Phosphorothioate Esters [作者：LAUER ANDREW M; WU JIMMY,期刊：Organic Letters, 页码：5138-5141 , 文章类型： Article，,卷期：2012年14-19] A highly regioselective, Pd-catalyzed allylic fluorination of phosphorothioate esters is reported. This chemistry addresses several limitations of previously reported methods in which elimination and lack of reactivity w... First Total Synthesis of Epicoccarine A via O- to C-Acyl Rearrangement Strategy [作者：UJIHARA YASUAKI; NAKAYAMA KEN; SENGOKU TETSUYA; TAKAHASHI MASAKI; YODA HIDEMI,期刊：Organic Letters, 页码：5142-5145 , 文章类型： Article，,卷期：2012年14-19] The first total synthesis of antibacterial epicoccarine A isolated from a fungus Epicoccum sp. has been accomplished in 10 steps along with synthetic elaboration of its C5-epimer, highlighting the utility of O- to C-acyl... A Three-Component Reaction toward the Synthesis of 1-Carboxamido-isoindoles [作者：ZHANG YANFENG; LEE CHI LUNG; LIU HAN; LI XUECHEN,期刊：Organic Letters, 页码：5146-5149 , 文章类型： Article，,卷期：2012年14-19] An efficient three-component reaction toward the facile synthesis of structurally diverse 1-carboxamido-isoindoles has been developed. The resultant isoindoles can be used in Diels-Alder reactions. Aerobic Organocatalytic Oxidation of Aryl Aldehydes: Flavin Catalyst Turnover by Hantzsch's Ester [作者：CHEN SHUAI; FOSS FRANK W JR,期刊：Organic Letters, 页码：5150-5153 , 文章类型： Article，,卷期：2012年14-19] The first Dakin oxidation fueled by molecular oxygen as the terminal oxidant is reported. Flavin and NAD(P)H coenzymes, from natural enzymatic redox systems, inspired the use of flavin organocatalysts and a Hantzsch este... Total Synthesis of 7 ',8 '-Dihydroaigialospirol [作者：YUEN TSZYING; BRIMBLE MARGARET A,期刊：Organic Letters, 页码：5154-5157 , 文章类型： Article，,卷期：2012年14-19] A highly convergent total synthesis of 7',8'-dihydroaigialospirol is described. Key steps of the synthesis include a Nozaki-Hiyama-Kishi (NHK) coupling of an iodoalkyne with an advanced phthalide-aldehyde and a remarkabl... Stereoselective Radical Amination of Electron-Deficient C(sp(3))-H Bonds by Co(II)-Based Metalloradical Catalysis: Direct Synthesis of alpha-Amino Acid Derivatives via alpha-C-H Amination [作者：LU HONGJIAN; HU YANG; JIANG HUILING; WOJTAS LUKASZ; ZHANG X PETER,期刊：Organic Letters, 页码：5158-5161 , 文章类型： Article，,卷期：2012年14-19] The cobalt(II) complex of 3,5-Di(t)Bu-IbuPhyrin, [Co(P1)], is an effective catalyst for intramolecular amination of electron-deficient C H bonds, including those adjacent to electron-withdrawing CO2R, C(O)NR2, C(O)R, and... Biomimetic Total Synthesis of (+/-)-Garcibracteatone [作者：PEPPER HENRY P; LAM HIU C; BLOCH WITOLD M; GEORGE JONATHAN H,期刊：Organic Letters, 页码：5162-5164 , 文章类型： Article，,卷期：2012年14-19] The polycyclic polyprenylated acylphloroglucinol natural product garcibracteatone has been synthesized in four steps from phloroglucinol, using a strategy based on biosynthetic speculation. The key biomimetic transformat... Total Synthesis of Echinopines A and B: Exploiting a Bioinspired Late-Stage Intramolecular Cyclopropanation (vol 13, pg 5724, 2011) [作者：PEIXOTO PHILIPPE A; RICHARD JEANALEXANDRE; SEVERIN RENE; CHEN DAVID Y K,期刊：Organic Letters, 页码：5165-5165 , 文章类型： Correction，,卷期：2012年14-19]