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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80条记录   Perylenetetracarboxylic Diimide Derivatives Linked with Spirobifluorene [作者：DU YANAN; JIANG LILIN; ZHOU JUN; QI GUIJU; LI XIYOU; YANG YANQIANG,期刊：Organic Letters, 页码：3052-3055 , 文章类型： Article，,卷期：2012年14-12] A series of perylenetetracarboxylic diimide (PDI) compounds linked with spirobifluorene have been prepared. The orthogonal configuration of the PDI subunits efficiently hindered their molecular aggregation in solution. E... CuI/DMPAO-Catalyzed N-Arylation of Acyclic Secondary Amines [作者：ZHANG YU; YANG XINYE; YAO QIZHENG; MA DAWEI,期刊：Organic Letters, 页码：3056-3059 , 文章类型： Article，,卷期：2012年14-12] DMPAO has been found to be a powerful ligand to enable copper-catalyzed coupling of aryl halides with aliphatic acyclic secondary amines take place under relatively mild conditions, and coupling of aryl halides with prim... Synthesis of Trifluoromethyl-Substituted Cyclopropanes via Sequential Kharasch-Dehalogenation Reactions [作者：RISSE JULIE; FERNANDEZZUMEL MARIANO A; CUDRE YANOUK; SEVERIN KAY,期刊：Organic Letters, 页码：3060-3063 , 文章类型： Article，,卷期：2012年14-12] A two-step process for the synthesis of trifluoromethyl-substituted cyclopropanes is described. Halothane, an anesthetic agent, is added to olefins in a ruthenium-catalyzed Kharasch reaction. The resulting 1,3-dihalides ... The Total Synthesis of (-)-Aurafuron A [作者：HARTMANN OLAF; KALESSE MARKUS,期刊：Organic Letters, 页码：3064-3067 , 文章类型： Article，,卷期：2012年14-12] The first total synthesis of (-)-aurafuron A is presented. It features a Suzuki cross-coupling reaction and a high yielding anionic aldol addition as central carbon skeleton building reactions. The synthesis confirms the... Sulfinyl-Mediated Stereoselective Overman Rearrangements and Diels-Alder Cycloadditions [作者：FERNANDEZ DE LA PRADILLA ROBERTO; COLOMER IGNACIO; VISO ALMA,期刊：Organic Letters, 页码：3068-3071 , 文章类型： Article，,卷期：2012年14-12] The Overman rearrangement of allylic sulfinyl trichloroacetimidates affords sulfinyl trichloroacetamides with high stereoselectivity and excellent yields. Bis-allylic substrates lead to amido 2-sulfinyl butadiene derivat... Daisy Chain Assembly Formed from a Cucurbit[6]uril Derivative [作者：CAO LIPING; ISAACS LYLE,期刊：Organic Letters, 页码：3072-3075 , 文章类型： Article，,卷期：2012年14-12] The building block synthesis of a derivative of CB[6] that bears a reactive propargyloxy group and its functionalization by click chemistry to yield 1 which contains a covalently attached isobutylammonium group is presen... Band Gap of Carbon-Sulfur [n]Helicenes [作者：MIYASAKA MAKOTO; PINK MAREN; OLANKITWANIT ARNON; RAJCA SUCHADA; RAJCA ANDRZEJ,期刊：Organic Letters, 页码：3076-3079 , 文章类型： Article，,卷期：2012年14-12] Asymmetric synthesis of (-)-[9]helicene, as well as preparation of its lower homologues, completes the series of carbon-sulfur [5]-, [7]-, [9]-, and [11]helicenes. Spectroscopic and electrochemical studies of this series... Prenylation of a Nonaromatic Carbon of Indolylbutenone by a Fungal Indole Prenyltransferase [作者：CHEN JING; MORITA HIROYUKI; WAKIMOTO TOSHIYUKI; MORI TAKAHIRO; NOGUCHI HIROSHI; ABE IKURO,期刊：Organic Letters, 页码：3080-3083 , 文章类型： Article，,卷期：2012年14-12] FtmPT1 from Aspergillus fumigatus is a fungal indole prenyltransferase (PT) that normally catalyzes the regiospecific prenylation of brevianamide F (cyclo-L-Trp-L-Pro) at the C-2 position of the indole ring with dimethyl... Kinetic Resolution of Amines via Dual Catalysis: Remarkable Dependence of Selectivity on the Achiral Cocatalyst [作者：MITTAL NISHA; SUN DIANA X; SEIDEL DANIEL,期刊：Organic Letters, 页码：3084-3087 , 文章类型： Article，,卷期：2012年14-12] A dual-catalysis/anion-binding approach with a chiral hydrogen bonding (HB) catalyst and an achiral nucleophilic cocatalyst was applied to the kinetic resolution of amines. Out of a structurally diverse collection of 22 ... Catalyst- and Solvent-Free Click Synthesis of Cyclodextrin-Based Polyrotaxanes Exploiting a Nitrile N-Oxide [作者：JANG KEUMHEE; MIURA KAORI; KOYAMA YASUHITO; TAKATA TOSHIKAZU,期刊：Organic Letters, 页码：3088-3091 , 文章类型： Article，,卷期：2012年14-12] A catalyst- and solvent-free synthesis of cyclodextrin-based polyrotaxanes exploiting a stable nitrile N-oxide as an end-capping agent was achieved. The C-C bond-forming end-capping reaction of an allyl-terminated pseudo... A Highly Diastereoselective Decarboxylative Mannich Reaction of beta-Keto Acids with Optically Active N-Sulfinyl alpha-Imino Esters [作者：YANG CUIFENG; SHEN CHEN; WANG JIANYONG; TIAN SHIKAI,期刊：Organic Letters, 页码：3092-3095 , 文章类型： Article，,卷期：2012年14-12] A range of protected gamma-oxo-alpha-amino esters have been prepared in a highly regio- and stereoselective manner through the decarboxylative Mannich reaction of beta-keto acids with optically active N-tert-butanesulfin... Virosaines A and B, Two New Birdcage-Shaped Securinega Alkaloids with an Unprecedented Skeleton from Flueggea virosa [作者：ZHAO BINGXIN; WANG YING; ZHANG DONGMEI; HUANG XIAOJUN; BAI LIANGLIANG; YAN YAN; CHEN JIAMEI; LU TONGBU; WANG YITAO; ZHANG QINGWEN; YE WENCAI,期刊：Organic Letters, 页码：3096-3099 , 文章类型： Article，,卷期：2012年14-12] Two new Securinega alkaloids, virosaines A (1) and B (2), were isolated from the twigs and leaves of Flueggea virosa. The structures and absolute configurations were elucidated by means of NMR, X-ray diffraction, and CD ... Palladium-Catalyzed Carbonylation of Aryl, Alkenyl, and Allyl Halides with Phenyl Formate [作者：UEDA TSUYOSHI; KONISHI HIDEYUKI; MANABE KEI,期刊：Organic Letters, 页码：3100-3103 , 文章类型： Article，,卷期：2012年14-12] Highly efficient palladium-catalyzed carbonylation of aryl, alkenyl, and allyl halides with phenyl formate is reported. This procedure does not use carbon monoxide and affords one-carbon-elongated carboxylic acid phenyl ... Stereoprogrammed Direct Synthesis of Calixarene-Based [3]Rotaxanes [作者：TALOTTA CARMEN; GAETA CARMINE; NERI PLACIDO,期刊：Organic Letters, 页码：3104-3107 , 文章类型： Article，,卷期：2012年14-12] Directional calixarene wheels were threaded along a bis(benzylalkylammonium) axle in a stereoprogrammed way to obtain the first examples of calixarene-based [3]rotaxanes. The base/acid treatment demonstrated that these s... Anti-Selective Direct Catalytic Asymmetric Aldol Reaction of Thiolactams [作者：SURESHKUMAR DEVARAJULU; KAWATO YUJI; IWATA MITSUTAKA; KUMAGAI NAOYA; SHIBASAKI MASAKATSU,期刊：Organic Letters, 页码：3108-3111 , 文章类型： Article，,卷期：2012年14-12] An anti-selective direct catalytic asymmetric aldol reaction of thiolactam is described. A soft Lewis acid/hard Bronsted base cooperative catalyst comprised of mesitylcopper/(R,R)-Ph-BPE exhibited high catalytic performa... Fluorescent Nanoaggregates of Pentacenequinone Derivative for Selective Sensing of Picric acid in Aqueous Media [作者：BHALLA VANDANA; GUPTA ANKUSH; KUMAR MANOJ,期刊：Organic Letters, 页码：3112-3115 , 文章类型： Article，,卷期：2012年14-12] Novel pentacenequinone derivative 3 has been synthesized using the Suzuki-Miyaura coupling protocol which forms fluorescent nanoaggregates in aqueous media due to its aggregation-induced emission enhancement attributes a...