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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64条记录   Pd-NHC Catalyzed Cyclopentannulation of Diazabicyclic Alkenes with ortho-aryl halides [作者：PRASAD B A BHANU; BUECHELE ALEXANDER E; GILBERTSON SCOTT R,期刊：Organic Letters, 页码：5422-5425 , 文章类型： Article，,卷期：2010年12-23] Pd-NHC catalyzed cyclopentannulat on of diazabicyclic alkenes with ortho- functionalized aryl halides is described. In all the reactions, a single diastereomer of the cyclopentannulated product is observed, and this reac... Rh(III)-Catalyzed Oxidative Coupling of N-Aryl-2-aminopyridine with Alkynes and Alkenes [作者：CHEN JINLEI; SONG GUOYONG; PAN CHENGLING; LI XINGWEI,期刊：Organic Letters, 页码：5426-5429 , 文章类型： Article，,卷期：2010年12-23] [RhCp*Cl-2](2) (1-2 mol %) can catalyze the oxidative coupling of N-aryl-2-aminopyridines with alkynes and arylates to give N-(2-pyridyl)indoles and N-(2-pyridyl)quinolones, respectively, using Cu(OAc)(2) as an oxidant. ... Rh(III)-Catalyzed Tandem Oxidative Olefination-Michael Reactions between Aryl Carboxamides and Alkenes [作者：WANG FEN; SONG GUOYONG; LI XINGWEI,期刊：Organic Letters, 页码：5430-5433 , 文章类型： Article，,卷期：2010年12-23] Rh(III)-catalyzed oxidative coupling reactions between benzamides or heteroaryl carboxamides and olefins have been developed. The vinylation product can further undergo a Michael reaction leading to gamma-lactam in the c... Asymmetric Epoxidation of alpha-Substituted Acroleins Catalyzed by Diphenylprolinol Silyl Ether [作者：BONDZIC BOJAN P; URUSHIMA TATSUYA; ISHIKAWA HAYATO; HAYASHI YUJIRO,期刊：Organic Letters, 页码：5434-5437 , 文章类型： Article，,卷期：2010年12-23] Asymmetric epoxidation of alpha-substituted acroleins with hydrogen peroxide has been catalyzed by diphenylprolinol diphenylmethylsilyl ether to afford alpha-substituted-beta,beta-unsubstituted-alpha,beta-epoxy aldehyde ... Oligomers of a 5-Carboxy-methanopyrrolidine beta-Amino Acid. A Search for Order [作者：KROW GRANT R; LIU NIAN; SENDER MATTHEW; LIN GUOLIANG; CENTAFONT RYAN; SONNET PHILIP E; DE BROSSE CHARLES; ROSS CHARLES W III; CARROLL PATRICK J; SHOULDERS MATTHEW D; RAINES RONALD T,期刊：Organic Letters, 页码：5438-5441 , 文章类型： Article，,卷期：2010年12-23] CD spectra for homooligomers (n = 4, 6, 8) of (1S,4R,5R)-5-syn-carboxy-2-azabicyclo[2.1.1]hexane (MPCA), a methano-bridged pyrrolidine beta-carboxylic acid, suggest an ordered secondary structure. Even in the absence of ... Sequential Double alpha-Arylation of N-Allylureas by Asymmetric Deprotonation and N -> C Aryl Migration [作者：TETLOW DANIEL J; HENNECKE ULRICH; RAFTERY JAMES; WARING MICHAEL J; CLARKE DAVID S; CLAYDEN JONATHAN,期刊：Organic Letters, 页码：5442-5445 , 文章类型： Article，,卷期：2010年12-23] On lithiation with lithium amides, N-allyl-N'-aryl ureas undergo rearrangement with transfer of the aryl ring from N to the allylic alpha carbon. From the alpha-arylated products, a further aryl transfer under the influe... SmI2-Mediated Radical Cyclizations Directed by a C-Si Bond [作者：HARB HASSAN Y; COLLINS KARL D; ALTUR JOSE V GARCIA; BOWKER SUE; CAMPBELL LEONIE; PROCTER DAVID J,期刊：Organic Letters, 页码：5446-5449 , 文章类型： Article，,卷期：2010年12-23] The use of a silicon stereocontrol element in cyclobutanol and cyclopentanol-forming cyclizations mediated by SmI2 results in excellent diastereocontrol. The C-Si bond in the products of cyclization provides a versatile ... Highly Enantioselective Michael Addition of Nitroalkanes to Chalcones Using Chiral Squaramides as Hydrogen Bonding Organocatalysts [作者：YANG WEN; DU DAMING,期刊：Organic Letters, 页码：5450-5453 , 文章类型： Article，,卷期：2010年12-23] A series of squaramide-based organocatalysts were facilely synthesized and applied as hydrogen bonding organocatalysts in the enantioselective Michael addition of nitroalkanes to chalcones. These organocatalysts promoted... Unsymmetrical Squaraines Incorporating the Thiophene Unit for Panchromatic Dye-Sensitized Solar Cells [作者：LI JHENGYING; CHEN CHIAYUAN; LEE CHUANPEI; CHEN SZUCHIEN; LIN TSUHAN; TSAI HUIHSU; HO KUOCHUAN; WU CHUNGUEY,期刊：Organic Letters, 页码：5454-5457 , 文章类型： Article，,卷期：2010年12-23] Two unsymmetrical squaraines, where the electron-rich 3,4-ethylenedioxythiophene or bithiophene conjugated fragment was used to link unconventionally the squaraine core and the hexyloxyphenyl amino group, were applied fo... Experimental and Theoretical Investigation of Epoxide Quebrachitol Derivatives Through Spectroscopic Analysis [作者：DE ALMEIDA MAURO V; DE ASSIS JOAO VITOR; COURI MARA RUBIA C; ANCONI CLEBER P A; GUERREIRO MARIO C; DOS SANTOS HELIO F; DE ALMEIDA WAGNER B,期刊：Organic Letters, 页码：5458-5461 , 文章类型： Article，,卷期：2010年12-23] Two synthetic epoxide derivatives, important intermediates in organic synthesis, were obtained from L-quebrachitol, and their conformations were proposed based on spectroscopic analysis. Density functional theory (DFT) c... Synthesis of 2-Pyridones and Iminoesters via Rh(III)-Catalyzed Oxidative Coupling between Acrylamides and Alkynes [作者：SU YAN; ZHAO MIAO; HAN KELI; SONG GUOYONG; LI XINGWEI,期刊：Organic Letters, 页码：5462-5465 , 文章类型： Article，,卷期：2010年12-23] Catalytic oxidative coupling between acrylamides and alkynes was achieved using 0.5 mol % loading of [RhCp*Cl-2](2) with Cu(OAc)(2) as an oxidant. 2-Pyridones, iminoesters, and substituted indoles could be obtained as a ... Synthesis of Several Cleistrioside and Cleistetroside Natural Products via a Divergent De Novo Asymmetric Approach [作者：WU BULAN; LI MIAOSHENG; ODOHERTY GEORGE A,期刊：Organic Letters, 页码：5466-5469 , 文章类型： Article，,卷期：2010年12-23] The de novo asymmetric syntheses of several partially acylated dodecanyl tri- and tetra-rhamnoside natural products (cleistriosides-5 and 6 and cleistetrosides-2 to 7) have been achieved (19-24 steps). The divergent rout... Electronic Tuning of Thiazolyl-Capped pi-Conjugated Compounds via a Coordination/Cyclization Protocol with B(C6F5)(3) [作者：JOB ANDRE; WAKAMIYA ATSUSHI; KEHR GERALD; ERKER GERHARD; YAMAGUCHI SHIGEHIRO,期刊：Organic Letters, 页码：5470-5473 , 文章类型： Article，,卷期：2010年12-23] Electronic tuning of thiazolyl-capped pi-conjugated systems via a coordination/cyclization protocol with B(C6F5)(3) effectively enhances an electron-accepting character giving rise to lower reduction potentials and incre... Gold(III)-Catalyzed Halogenation of Aromatic Boronates with N-Halosuccinimides [作者：QIU DI; MO FANYANG; ZHENG ZHITONG; ZHANG YAN; WANG JIANBO,期刊：Organic Letters, 页码：5474-5477 , 文章类型： Article，,卷期：2010年12-23] Aromatic boronates bearing halogen substituents in the aromatic ring can be synthesized by AuCl3-catalyzed halogenations with N-halosuccinimides. Synthesis and Characterization of Fused Pyrrolo[3,2-d:4,5-d ']bisthiazole-Containing Polymers [作者：ALHASHIMI MOHAMMED; LABRAM JOHN G; WATKINS SCOTT; MOTEVALLI MAJID; ANTHOPOULOS THOMAS D; HEENEY MARTIN,期刊：Organic Letters, 页码：5478-5481 , 文章类型： Article，,卷期：2010年12-23] The synthesis of a novel electron-deficient fused pyrrolo[3,2-d:4,5-d']bisthiazole is reported from 2-bromothiazole. This was copolymerized with thiophene, selenophene, thienothiophene, and bithiophene by microwave-assis... Vicinal-Diamine-Based Chiral Chain Dienes as Ligands for Rhodium(I)-Catalyzed Highly Enantioselective Conjugated Additions [作者：WANG YAZHOU; HU XICHAO; DU HAIFENG,期刊：Organic Letters, 页码：5482-5485 , 文章类型： Article，,卷期：2010年12-23] A variety of readily accessible vicinal-diamine-based chiral chain dienes were successfully synthesized and utilized as steering ligands for rhodium-catalyzed conjugated additions of organoboronic acids to alpha,beta-uns...