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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84条记录   Catalytic Asymmetric Synthesis of alpha,beta-Disubstituted alpha,gamma-Diaminophosphonic Acid Precursors by Michael Addition of alpha-Substituted Nitrophosphonates to Nitroolefins [作者：TRIPATHI CHANDRA BHUSHAN; KAYAL SATAVISHA; MUKHERJEE SANTANU,期刊：Organic Letters, 页码：3296-3299 , 文章类型： Article，,卷期：2012年14-13] Michael additions of alpha-substituted nitrophosphonates to various nitroolefins are shown to proceed with high diastereo- and enantioselectivity when catalyzed by a quinine-derived thiourea-tertiary amine bifunctional c... Dibenzoannelated Tetrathienoacene: Synthesis, Characterization, and Applications in Organic Field-Effect Transistors [作者：HUANG JIANYAO; LUO HAO; WANG LIPING; GUO YUNLONG; ZHANG WEIFENG; CHEN HUAJIE; ZHU MINLIANG; LIU YUNQI; YU GUI,期刊：Organic Letters, 页码：3300-3303 , 文章类型： Article，,卷期：2012年14-13] Two structural isomers of six-fused-ring sulfur-containing molecules were synthesized as active materials for p-type organic field-effect transistors, and their optical and electrochemical properties were characterized. ... Palladium(II)-Catalyzed Direct Alkenylation of Nonaromatic Enamides [作者：GIGANT NICOLAS; GILLAIZEAU ISABELLE,期刊：Organic Letters, 页码：3304-3307 , 文章类型： Article，,卷期：2012年14-13] A mild and efficient method for the direct alkenylation of nonaromatic enamides was achieved through a palladium(II)-catalyzed C-H funclionalization. The reaction scope includes cyclic and acyclic enamides and a range of... Enantioselective Synthesis of 1-Aryl-tetrahydroisoquinolines through Iridium Catalyzed Asymmetric Hydrogenation [作者：BERHAL FAROUK; WU ZI; ZHANG ZHAOGUO; AYAD TAHAR; RATOVELOMANANAVIDAL VIRGINIE,期刊：Organic Letters, 页码：3308-3311 , 文章类型： Article，,卷期：2012年14-13] Asymmetric hydrogenation of 1-aryl-3,4-dihydrolsoquinolines using the [IrCODCl](2)/(R)-3,5-diMe-Synphos catalyst is reported. Under mild reaction conditions, this atom-economical process provides easy access to a variety... Chiral Phosphoric Acid Catalyzed Enantioselective Transfer Deuteration of Ketimines by Use of Benzothiazoline As a Deuterium Donor: Synthesis of Optically Active Deuterated Amines [作者：SAKAMOTO TSUBASA; MORI KEIJI; AKIYAMA TAKAHIKO,期刊：Organic Letters, 页码：3312-3315 , 文章类型： Article，,卷期：2012年14-13] By use of 2-deuterated benzothiazoline as a deuterium donor in combination with a chiral phosphoric acid, the transfer deuteration of ketimine and alpha-iminoester took place smoothly to give alpha-deuterated amines in h... Nickel-Catalyzed Monosubstitution of Polyfluoroarenes with Organozinc Reagents Using Alkoxydiphosphine Ligand [作者：NAKAMURA YUKI; YOSHIKAI NAOHIKO; ILIES LAUREAN; NAKAMURA EIICHI,期刊：Organic Letters, 页码：3316-3319 , 文章类型： Article，,卷期：2012年14-13] A new diphosphine (POP) ligand bearing an alkoxide group allows us to synthesize partially fluorinated arenes. A nickel-catalyzed cross-coupling between a polyfluoroarene and an organozinc reagent in the presence of POP ... A Spiro[chroman-3,7 '-isochromene]-4,6 '(8 ' H)-dione from the Cordyceps-Colonizing Fungus Fimetariella sp. [作者：LI ERWEI; ZHANG FAN; NIU SHUBIN; LIU XINGZHONG; LIU GANG; CHE YONGSHENG,期刊：Organic Letters, 页码：3320-3323 , 文章类型： Article，,卷期：2012年14-13] Fimetarone A (1), a metabolite with the new spiro[chroman-3,7'-isochromene]-4,6'(8'H)-dione skeleton, was isolated from cultures of the Cordyceps-colonizing fungus Fimetariella sp. Compound 1 was a 1:1 atropdiastereomeri... Ligand-Controlled Iron-Catalyzed Coupling of alpha-Substituted beta-Ketoesters with Phenols [作者：PARNES REGEV; KSHIRSAGAR UMESH A; WERBELOFF AVIYA; REGEV CLIL; PAPPO DORON,期刊：Organic Letters, 页码：3324-3327 , 文章类型： Article，,卷期：2012年14-13] A chemo-, regio-, and stereoselective FeCl3/1,10-phenanthroline-catalyzed cross dehydrogenative coupling (CDC) reaction between phenols and alpha-substituted beta-ketoesters was developed. The reaction creates a new quat... Palladium-Catalyzed Hiyama Couplings of alpha-Silylenoates and alpha-Silylenamides [作者：ROOKE DOUGLAS A; FERREIRA ERIC M,期刊：Organic Letters, 页码：3328-3331 , 文章类型： Article，,卷期：2012年14-13] The Hiyama couplings of both alpha-silylenoates and alpha-silylenamides are described. These sensitive substrate classes require particularly specific conditions, employing both appropriate silicon-based species and a si... A CuAAC/Ullmann C-C Coupling Tandem Reaction: Copper-Catalyzed Reactions of Organic Azides with N-(2-Iodoaryl)propiolamides or 2-Iodo-N-(prop-2-ynyl)benzenamines [作者：CAI QIAN; YAN JIAJIE; DING KE,期刊：Organic Letters, 页码：3332-3335 , 文章类型： Article，,卷期：2012年14-13] A novel copper-catalyzed tandem reaction was developed by utilizing two famous copper-catalyzed reactions, CuAAC and Ullmann coupling. The trapping of the C-Cu intermediate produced in CuAAC led to further formation of a... Metal-Free, Organocatalytic Syn Diacetoxylation of Alkenes [作者：ZHONG WENHE; LIU SHAN; YANG JUN; MENG XIANGBAO; LI ZHONGJUN,期刊：Organic Letters, 页码：3336-3339 , 文章类型： Article，,卷期：2012年14-13] A novel method for the organocatalytic syn diacetoxylation of alkenes has been developed using aryl iodides as efficient catalysts. A broad range of substrates, including electron-rich as well as electron-deficient alken... A Reductive-Heck Approach to the Hydroazulene Ring System: A Formal Synthesis of the Englerins [作者：GAO PENG; COOK SILAS P,期刊：Organic Letters, 页码：3340-3343 , 文章类型： Article，,卷期：2012年14-13] The reduction of a palladium enolate prior to beta-hydride elimination provides a unique reaction for the synthesis of the hydroazulene ring system. When combined with a transannular epoxide rearrangement cascade, the re... Gold-Catalyzed Cascade Reaction of Hydroxy Enynes for the Synthesis of Oxanorbornenes and Naphthalene Derivatives [作者：SONG XIANRONG; XIA XIAOFENG; SONG QINGBAO; YANG FANG; LI YINGXIU; LIU XUEYUAN; LIANG YONGMIN,期刊：Organic Letters, 页码：3344-3347 , 文章类型： Article，,卷期：2012年14-13] An efficient and selective gold-catalyzed cascade reaction for the synthesis of oxanorbornenes and naphthalene derivatives from easily prepared hydroxy enynes has been developed. Divergent products could be obtained from... Rapid Continuous Synthesis of 5 '-Deoxyribonucleosides in Flow via Bronsted Acid Catalyzed Glycosylation [作者：SHEN BO; JAMISON TIMOTHY F,期刊：Organic Letters, 页码：3348-3351 , 文章类型： Article，,卷期：2012年14-13] A general, green, and efficient Bronsted acid-catalyzed glycosylation serves as a key step in the one-flow, multistep syntheses of several important 5'-deoxyribonucleoside pharmaceuticals. Nickel-Catalyzed Reductive Coupling of Aryl Halides with Secondary Alkyl Bromides and Allylic Acetate [作者：WANG SHULIN; QIAN QUN; GONG HEGUI,期刊：Organic Letters, 页码：3352-3355 , 文章类型： Article，,卷期：2012年14-13] A room-temperature Ni-catalyzed reductive method for the coupling of aryl bromides with secondary alkyl bromides has been developed, providing C(sp(2))-C(sp(3)) products in good to excellent yields. Slight modification o... Ambipolar Behavior of Hydrogen-Bonded Diketopyrrolopyrrole Thiophene Co-oligomers Formed from Their Soluble Precursors [作者：SUNA YUKI; NISHIDA JUNICHI; FUJISAKI YOSHIHIDE; YAMASHITA YOSHIRO,期刊：Organic Letters, 页码：3356-3359 , 文章类型： Article，,卷期：2012年14-13] Organic field-effect transistors with hydrogen-bonded diketopyrrolopyrrole-thiophene co-oligomers were fabricated by a solution-process method with annealing at 200 degrees C, showing ambipolar charge-carrier transfer wi...