个性化文献订阅>文章检索

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   Generation and Spectroscopic Profiles of Stable Multiarylaminium Radical Cations Bridged by Fluorenes [作者：CHANG CHAOCHE; YUEH HAN; CHEN CHAOTSEN,期刊：Organic Letters, 页码：2702-2705 , 文章类型： Article，,卷期：2011年13-10] A series of arylaminofluorene derivatives (DTFA-1, TTFA-2, TAFB-3, and TAFA-4) were synthesized, and the generation of their corresponding arylaminium cation radicals was readily achieved by Cu(ClO4)(2) in CH3CN. Moreove... Mechanically Interlocked Mechanophores by Living-Radical Polymerization from Rotaxane Initiators [作者：STOLL RAGNAR S; FRIEDMAN DOUGLAS C; STODDART J FRASER,期刊：Organic Letters, 页码：2706-2709 , 文章类型： Article，,卷期：2011年13-10] Two [2]rotaxane initiators for single-electron-transfer living-radical-polymerization were synthesized and used for the controlled polymerization of methyl acrylate. The mechanically interlocked polymers exhibited distin... Benzo[a]phenoxazinium-Based Red-Emitting Chemosensor for Zinc Ions in Biological Media [作者：YANG XUEBO; YANG BAIXIA; GE JIANFENG; XU YUJIE; XU QINGFENG; LIANG JIE; LU JIANMEI,期刊：Organic Letters, 页码：2710-2713 , 文章类型： Article，,卷期：2011年13-10] A benzo[a]phenoxazinium-based chemosensor bearing an N,N-di(2-picolyl)ethylenediamine unit was successfully synthesized. It Is a long-wave emission and fully water-soluble fluorescent sensor with good membrane permeabili... Nucleophilic Deoxyfluorination of Catechols [作者：NEMOTO HIROYUKI; NISHIYAMA TSUYOSHI; AKAI SHUJI,期刊：Organic Letters, 页码：2714-2717 , 文章类型： Article，,卷期：2011年13-10] Nucleophilic deoxyfluorinalton of one of the two hydroxyl groups of catechols has been developed via the Umpolung concept. This method was successively applied to naturally occurring catechols, such as catechins and dopa... Regio- and Stereoselective Synthesis of 2-Amino-1,3-diene Derivatives by Ruthenium-Catalyzed Coupling of Ynamides and Ethylene [作者：SAITO NOZOMI; SAITO KEIICHI; SHIRO MOTOO; SATO YOSHIHIRO,期刊：Organic Letters, 页码：2718-2721 , 文章类型： Article，,卷期：2011年13-10] A ruthenium-catalyzed hydrovinylation-type cross-coupling of ynamides and ethylene proceeds via ruthenacyclopentene to give 2-aminobuta-1,3-diene derivatives in a highly regioselective manner. It was also demonstrated th... A Stereoselective Formal Synthesis of Leucascandrolide A [作者：LEE KIYOUN; KIM HYOUNGSU; HONG JIYONG,期刊：Organic Letters, 页码：2722-2725 , 文章类型： Article，,卷期：2011年13-10] A stereoselective formal synthesis of leucascandrolide A was accomplished through the tandem and organocatalytic oxa-Michael reactions, which were promoted by the gem-disubstituent effect, in conjunction with the dithian... Ruthenium-Catalyzed gamma-Carbolinium Ion Formation from Aryl Azides; Synthesis of Dimebolin [作者：DONG HUIJUN; LATKA REGINA T; DRIVER TOM G,期刊：Organic Letters, 页码：2726-2729 , 文章类型： Article，,卷期：2011年13-10] A range of gamma-carbolines were produced stereoselectively from ruthenium(III)-catalyzed reactions of 3-pyridyl substituted aryl azides. Other catalysts and conditions were neither as selective nor as high-yielding. Thi... A Serendipitous Synthesis of (+)-Gregatin B, Second Structure Revisions of the Aspertetronins, Gregatins, and Graminin A, Structure Revision of the Penicilliols [作者：BURGHARTSTOLL HEIKE; BRUECKNER REINHARD,期刊：Organic Letters, 页码：2730-2733 , 文章类型： Article，,卷期：2011年13-10] A (DHQN)(2)AQN-promoted asymmetric dihydroxylation (92% ee) of the allyl chloride derived from enynol (E)-13 and an 8-step sequence provided access to the hydroxyethylated furanone (R)-21. Oxidation with MnO2 furnished 5... Stereoselective Synthesis of a Model C(18)-C(35) Spiroketal Fragment of Integramycin [作者：SUN HUIKAI; ABBOTT JASON R; ROUSH WILLIAM R,期刊：Organic Letters, 页码：2734-2737 , 文章类型： Article，,卷期：2011年13-10] A highly stereoselective synthesis of a model C(18)-C(35) spiroketal unit (7) of integramycin has been accomplished via an enantioselective stannyl-crotylboration reaction and an N-iodosuccinimide-mediated spiroketalizat... Aminothiocarbamate-Catalyzed Asymmetric Bromolactonization of 1,2-Disubstituted Olefinic Acids [作者：TAN CHONG KIAT; ZHOU LING; YEUNG YINGYEUNG,期刊：Organic Letters, 页码：2738-2741 , 文章类型： Article，,卷期：2011年13-10] An efficient and enantioselective bromolactonization of 1,2-disubstituted olefinic acids using an amino-thiocarbamate catalyst has been developed, resulting In the formation of delta-lactones containing two chiral center... A Novel Supermolecular Tetrameric Vanadate-Selective Colorimetric and "Off-On" Sensor with Pyrene Ligand [作者：ZHOU YING; JUNG JI YOUNG; JEON HYE RYEONG; KIM YOUNGMEE; KIM SUNGJIN; YOON JUYOUNG,期刊：Organic Letters, 页码：2742-2745 , 文章类型： Article，,卷期：2011年13-10] Tris(2-((ethylimino)methyl)pyren-1-ol)amine (1) was synthesized and introduced as the first tetrameric vanadate fluorescence sensor, the entire binding of which was successfully accomplished in two steps with distinct co... Zinc Triflate Catalyzed Aerobic Cross-Dehydrogenative Coupling (CDC) of Alkynes with Nitrones: A New Entry to Isoxazoles [作者：MURARKA SANDIP; STUDER ARMIDO,期刊：Organic Letters, 页码：2746-2749 , 文章类型： Article，,卷期：2011年13-10] A mild, operationally simple cross-dehydrogenative coupling between nitrones and terminal alkynes is described by using cheap, readily available 3,3',5,5'-tetra-tert-butyldipheno-quinone and dioxygen as oxidants. These c... Nickel-Catalyzed Selective Defluorination to Generate Partially Fluorinated Biaryls [作者：SUN ALEX D; LOVE JENNIFER A,期刊：Organic Letters, 页码：2750-2753 , 文章类型： Article，,卷期：2011年13-10] A Ni-catalyzed, chemoselective cross-coupling reaction of polyfluoroarenes under mild reaction conditions is reported. A variety of fluorine-containing blaryls are synthesized in good-to-excellent yields. A wide range of... CuAAC Macrocyclization: High Intramolecular Selectivity through the Use of Copper-Tris(triazole) Ligand Complexes [作者：CHOUHAN GAGAN; JAMES KEITH,期刊：Organic Letters, 页码：2754-2757 , 文章类型： Article，,卷期：2011年13-10] A range of multivalent heteroaryl ligands, copper sources, and solvent systems have been Investigated for use in CuAAC-mediated macrocyclization reactions. These studies have revealed the key factors governing selectivit... Facile Synthesis of Picene from 1,2-Di(1-naphthyl)ethane by 9-Fluorenone-Sensitized Photolysis [作者：OKAMOTO HIDEKI; YAMAJI MINORU; GOHDA SHIN; KUBOZONO YOSHIHIRO; KOMURA NORIKO; SATO KAORI; SUGINO HISAKO; SATAKE KYOSUKE,期刊：Organic Letters, 页码：2758-2761 , 文章类型： Article，,卷期：2011年13-10] A facile formation of picene was achieved by photosensitization of 1,2-di(1-naphthyl)ethane using 9-fluorenone as a sensitizer. This sensitized photoreaction is the first photochemical cyclization of ethylene-bridged nap... InCl3/Me3SiBr-Catalyzed Direct Coupling between Silyl Ethers and Enol Acetates [作者：ONISHI YOSHIHARU; NISHIMOTO YOSHIHIRO; YASUDA MAKOTO; BABA AKIO,期刊：Organic Letters, 页码：2762-2765 , 文章类型： Article，,卷期：2011年13-10] A combined Lewis acid catalyst of InCl3 and Me3SiBr promoted the direct use of enol acetates in the coupling with low-reactive silyl ethers, in which functional groups Including ketones and aldehydes survived. Sterically...