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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   A Hg(ClO(4))(2)center dot 3H(2)O Catalyzed Sakurai-Hosomi Allylation of Isatins and Isatin Ketoimines Using Allyltrimethylsilane [作者：CAO ZHONGYAN; ZHANG YAN; JI CONGBIN; ZHOU JIAN,期刊：Organic Letters, 页码：6398-6401 , 文章类型： Article，,卷期：2011年13-24] It is reported that Hg(ClO(4))(2)center dot 3H(2)O could efficiently activate the cheap but less reactive allyltrimethylsilane for the allylation of isatins or isatin ketoimines, with catalyst loading down to 0.1 mol %. ... An Efficient Route to Tetrahydroindeno[2,1-b]pyrroles via a Base-Promoted Reaction of (E)-2-Alkynylphenylchalcone with 2-Isocyanoacetate [作者：ZHENG DANQING; LI SHAOYU; LUO YONG; WU JIE,期刊：Organic Letters, 页码：6402-6405 , 文章类型： Article，,卷期：2011年13-24] A base-promoted cascade reaction of (E)-2-alkynylphenylchalcone with 2-isocyanoacetate provides a novel and efficient route for the synthesis of tetrahydroindeno[2,1-b]pyrroles. The reaction proceeds smoothly in air unde... Diastereoselective Synthesis of 1,3,5-Trisubstituted 4-Nitropyrrolidin-2-ones via a Nitro-Mannich/Lactamization Cascade [作者：PELLETIER SOPHIE M C; RAY PETER C; DIXON DARREN J,期刊：Organic Letters, 页码：6406-6409 , 文章类型： Article，,卷期：2011年13-24] A versatile one-pot nitro-Mannich/lactamization cascade for the direct synthesis of 1,3,5-trisubstituted 4-nitropyrrolidin-2-ones has been developed. The reaction is easy to perform and broad in scope, and high levels of... Bifunctional 3,3 '-Ph(2)-BINOL-Mg Catalyzed Direct Asymmetric Vinylogous Michael Addition of alpha,beta-Unsaturated gamma-Butyrolactam [作者：LIN LI; ZHANG JINLONG; MA XIAOJUAN; FU XU; WANG RUI,期刊：Organic Letters, 页码：6410-6413 , 文章类型： Article，,卷期：2011年13-24] Bifunctional 3,3'-Ph(2)-BINOL-Mg catalyzed direct asymmetric vinylogous Michael addition of alpha,beta-unsaturated gamma-butyrolactam has been developed. The catalytic activity of this protocol was slightly affected by d... Continuous Photochemical Generation of Catalytically Active [CpRu](+) Complexes from CpRu(eta(6)-C(6)H(6))PF(6) [作者：GUTIERREZ ALICIA C; JAMISON TIMOTHY F,期刊：Organic Letters, 页码：6414-6417 , 文章类型： Article，,卷期：2011年13-24] Inter- and intramolecular ene-yne coupling reactions catalyzed by a species generated in situ via photolysis of CpRu(eta(6)-C(6)H(6))PF(6)-an inexpensive, readily available, and shelf-stable complex-have been demonstrate... Transition-Metal-Catalyzed Uninterrupted Four-Step Sequence to Access Trisubstituted Isoxazoles [作者：GAYON ERIC; QUINONERO OPHELIE; LEMOUZY SEBASTIEN; VRANCKEN EMMANUEL; CAMPAGNE JEANMARC,期刊：Organic Letters, 页码：6418-6421 , 文章类型： Article，,卷期：2011年13-24] We describe herein a novel uninterrupted four-step sequence to access trisubstituted isoxazoles from readily available propargylic alcohols using sequentially iron and palladium catalytic systems. The advantages of such ... The N-Aryl Aminocarbonyl ortho-Substituent Effect in Cu-Catalyzed Aryl Amination and Its Application in the Synthesis of 5-Substituted 11-Oxo-dibenzodiazepines [作者：DIAO XIAOQIONG; XU LANTING; ZHU WEI; JIANG YONGWEN; WANG HAOYANG; GUO YINLONG; MA DAWEI,期刊：Organic Letters, 页码：6422-6425 , 文章类型： Article，,卷期：2011年13-24] Double amination of ortho-substituted aryl bromides proceeded under mild conditions to afford 5-substituted 11-oxo-dibenzodiazepines, which revealed that there is a strong ortho-substituent effect caused by N-aryl aminoc... A Concise Total Synthesis of (+/-)-Minfiensine [作者：LIU PEIJUN; WANG JUAN; ZHANG JIANCUN; QIU FAYANG G,期刊：Organic Letters, 页码：6426-6428 , 文章类型： Article，,卷期：2011年13-24] A concise total synthesis of (+/-)-minfiensine using all conventional methods and starting from commercial materials has been completed. The synthesis features a Fischer indole synthesis, a Heck alkylation of an intermed... Radical-Mediated Anti-Markovnikov Hydrophosphonation of Olefins [作者：DAEFFLER CHRISTOPHER S; GRUBBS ROBERT H,期刊：Organic Letters, 页码：6429-6431 , 文章类型： Article，,卷期：2011年13-24] The radical-mediated addition of triphenylphosphonium tetrafluoroborate to olefins (hydrophosphonation) is reported. Both standard radical initiators and photochemical conditions are effective, up to the gram scale. The ... A Bisferrocene-Benzobisimidazole Triad as a Multichannel Ditopic Receptor for Selective Sensing of Hydrogen Sulfate and Mercury Ions [作者：ALFONSO MARIA; TARRAGA ALBERTO; MOLINA PEDRO,期刊：Organic Letters, 页码：6432-6435 , 文章类型： Article，,卷期：2011年13-24] The bisferrocene-benzobisimidazole triad behaves as a selective redox and fluorescent chemosensor for HSO(4)(-) and Hg(2+) ions, exhibiting an easily detectable signal change in both the redox potential of the ferrocene/... Gram-Scale Synthesis of the A ' B '-Subunit of Angelmicin B [作者：MILGRAM BENJAMIN C; LIAU BRIAN B; SHAIR MATTHEW D,期刊：Organic Letters, 页码：6436-6439 , 文章类型： Article，,卷期：2011年13-24] A gram-scale enantiospecific synthesis of the A'B'-subunit of angelmicin B is reported. The synthesis involves a Lewis acid catalyzed contrasteric Dials-Alder reaction and a tandem silyl zincate 1,6-addition/enolate oxid... New Preparation of Benzylic Aluminum and Zinc Organometallics by Direct Insertion of Aluminum Powder [作者：BLUEMKE TOBIAS D; GROLL KLAUS; KARAGHIOSOFF KONSTANTIN; KNOCHEL PAUL,期刊：Organic Letters, 页码：6440-6443 , 文章类型： Article，,卷期：2011年13-24] The reaction of commercial Al-powder (3 equiv) and InCl(3) (1-5 mol %) with benzylic chlorides provides various functionalized benzylic aluminum sesquichlorides under mild conditions (THF, 20 degrees C, 3-24 h) without h... Total Synthesis of the Photoprotecting Dipyrrolobenzoquinone (+)-Terreusinone [作者：WANG CHRISTY; SPERRY JONATHAN,期刊：Organic Letters, 页码：6444-6447 , 文章类型： Article，,卷期：2011年13-24] The first synthesis of (+)-terreusinone 1, a dipyrrolobenzoquinone with a potent UV-A protecting capability, is described. Key transformations include a one-pot Larock indolization-Sonogashira coupling reaction and the h... Au-Catalyzed Piperidine Synthesis via Tandem Acyloxy Migration/Intramolecular [3+2] Cycloaddition of Enynyl Esters [作者：ZHENG HUAIJI; HUO XING; ZHAO CHANGGUI; JING PENG; YANG JUAN; FANG BOWEN; SHE XUEGONG,期刊：Organic Letters, 页码：6448-6451 , 文章类型： Article，,卷期：2011年13-24] An Au-catalyzed tandem protocol involving enynyl ester isomerization and subsequent intramolecular [3 + 2] cyclization has been developed. This strategy provides an efficient approach for the synthesis of polyfunctional ... Synthesis of (-)-Swainsonine and (-)-8-epi-Swainsonine by the Addition of Allenylmetals to Chiral alpha,beta-Alkoxy Sulfinylimines [作者：LOUVEL JULIEN; CHEMLA FABRICE; DEMONT EMMANUEL; FERREIRA FRANCK; PEREZLUNA ALEJANDRO,期刊：Organic Letters, 页码：6452-6455 , 文章类型： Article，,卷期：2011年13-24] The asymmetric synthesis of (-)-swainsonine and (-)-8-epi-swainsonine is reported through the addition of either the allenylzinc or the allenyl lithio cyanocuprate reagents derived from [3-(methoxymethoxy)prop-1-ynyl]tri... Scope and Mechanistic Studies of Electrophilic Alkoxyetherification [作者：CHEN JIE; CHNG SHUYUN; ZHOU LING; YEUNG YINGYEUNG,期刊：Organic Letters, 页码：6456-6459 , 文章类型： Article，,卷期：2011年13-24] A one-pot electrophilic alkoxyetherification using an olefin, a cyclic ether, a carboxylic acid, and N-bromosuccinimide has been developed. The oxygen nucleophiles, the olefinic substrates, and the cyclic ether partners ...